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fire alarm repeater panel wireless Wireless Heat Detector with Rate-of-Rise and Fixed Temperature Element export OEM ODM wholesale
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The WANLIN-340 Wireless Heat Detector with Rate-of-Rise and Fixed Temperature Element is supplied to this specification: Alarm output Integral 80 dB(A) at 3 m sounder plus platform alert and group alarm through the paired gateway; IP rating IP42 indoor standard, IP65 with the sealed industrial housing for kitchens and wash-down areas; Operating temperature -10 deg C to +55 deg C, wide-temp SKU to -30 deg C for cold stores; Humidity range 10-95% RH non-condensing, conformal-coated PCB on the IP65 SKU; Housing material Flame-retardant ABS V-0 housing, IP65 SKU in polycarbonate with a stainless-steel heat collector; Dimensions and weight 100 mm diameter x 46 mm height, 152 g net including the cell; Alarm threshold Fixed temperature 54-70 deg C by class, rate-of-rise trip between 3 and 30 deg C/min; Accuracy class EN 54-5 and GB 4716 class accuracy, thermistor tolerance +/-1.5 deg C, rate-of-rise window selectable in three bands; Response time Static response within 30-120 s to the EN 54-5 test regime by class, rate-of-rise trip within 60 s of a fast transient; Power supply 3.6V ER18505M lithium cell, 5-year service life, field-replaceable, 3-year life on the 4G SKU; Power consumption 11 uA standby, 120 mA peak transmit, 28 mA in alarm; Output signal 433 MHz FSK, LoRaWAN 1.0.3 Class A or 4G LTE Cat-1 uplink per SKU, with a fault and tamper uplink every 24 h; Coverage area Up to 50 m2 at 6 m mounting height, 30 m2 in high-ceiling or high-airflow areas. As of September 30, 2026, Wanlin Group (Shenzhen, China) officially launches its 2026 Hong Kong wireless fire alarm system export programme, featuring the WANLIN-340 Wireless Heat Detector with Rate-of-Rise and Fixed Temperature Element as the flagship OEM and ODM component for overseas buyers, cross-border trading companies, EPC contractors, main contractors running phased handovers, facility management groups, hotel and hospital estates, retail and mall operators, university and school districts, warehouse and logistics operators, road and rail transport authorities, heritage property owners and regional importers who source Hong Kong wireless fire detection hardware from a China-based source factory under the Wanlin brand. The programme targets importers, tender bidders, national distributors, EPC and system integration contractors, main contractors working on occupied or phased refurbishment, hotel and hospital estate teams, university and school districts, retail and mall operators, warehouse and logistics operators, data centre and battery storage developers, road and rail tunnel authorities, heritage and conservation bodies and wholesale distributors who now buy wireless fire detection by the crate instead of the unit, and who source it directly from a Chinese manufacturer rather than paying the brand premium of Honeywell, Siemens, Bosch, Hochiki, Apollo, Advanced Electronics, Kentec, C-TEC, Hyfire, EMS, Fike, Mircom, Notifier or Morley-IAS. Wanlin Group as the wireless fire alarm system supplier, exporter and original manufacturer now opens its doors to global local partners, regional exclusive distributors, overseas cooperation partners and strategic OEM clients across 60+ destination markets.
Working principle: rate-of-rise plus fixed temperature dual algorithm evaluated on a thermistor bridge with air-flow compensation. Housing material: flame-retardant ABS V-0 housing, IP65 SKU in polycarbonate with a stainless-steel heat collector, which survives the cleaning regime a ground-floor food premises imposes on the common parts. Dimensions and weight: 100 mm diameter x 46 mm height, 152 g net including the cell, which is small enough to mount on a subdivided unit ceiling without a new fixing plate. Alarm threshold: fixed temperature 54-70 deg C by class, rate-of-rise trip between 3 and 30 deg C/min, set so that one criterion raises a pre-alarm while confirmed smoke plus carbon monoxide raises the fire signal. Accuracy class: EN 54-5 and GB 4716 class accuracy, thermistor tolerance +/-1.5 deg C, rate-of-rise window selectable in three bands, which is the class written into the acceptance file before the device count is signed off. Response time: static response within 30-120 s to the EN 54-5 test regime by class, rate-of-rise trip within 60 s of a fast transient, which sits inside the transmission chain the department evaluates, from detector to gateway through to the communications centre. Power supply: 3.6V ER18505M lithium cell, 5-year service life, field-replaceable, 3-year life on the 4G SKU, which is the reason a building with no riser and no spare way on the distribution board can still reach compliance. Power consumption: 11 uA standby, 120 mA peak transmit, 28 mA in alarm, which is the drain the monthly performance report tracks, so a failing cell is changed before it goes silent. Output signal: 433 MHz FSK, LoRaWAN 1.0.3 Class A or 4G LTE Cat-1 uplink per SKU, with a fault and tamper uplink every 24 h, which is the path that has to survive a mobile network outage, hence the second SIM on a different external network. Coverage area: up to 50 m2 at 6 m mounting height, 30 m2 in high-ceiling or high-airflow areas, which is what stops a subdivided unit from ending up with its detector in the wrong half of the room. Alarm output: Integral 80 dB(A) at 3 m sounder plus platform alert and group alarm through the paired gateway, which is proven with certified test aerosol rather than a permit to burn, so an occupied building never has to be evacuated to test. IP rating: IP42 indoor standard, IP65 with the sealed industrial housing for kitchens and wash-down areas, which is what keeps ground-floor shop units, open staircases and rooftop plant positions inside one specification. Operating temperature: -10 deg C to +55 deg C, wide-temp SKU to -30 deg C for cold stores, which is the window the three-year warranty is written against. Humidity range: 10-95% RH non-condensing, conformal-coated PCB on the IP65 SKU, which is what stops a detector in a bathroom-adjacent corridor reporting a fault every April. Certifications: EN 54-5 / CE / RoHS / REACH / FCC Part 15 / GB 4716 CCCF / EN 14604 on request for the residential SKU.
Executive summary - 12 buyer-relevant points:
- Flagship model WANLIN-340 Wireless Heat Detector with Rate-of-Rise and Fixed Temperature Element, rate-of-rise plus fixed temperature dual algorithm evaluated on a thermistor bridge with air-flow compensation
- Sensing element ntc thermistor with a stainless-steel heat collector, a1r / a2s / br / cs class selectable per sku
- Alarm threshold fixed temperature 54-70 deg c by class, rate-of-rise trip between 3 and 30 deg c/min
- Accuracy and response en 54-5 and gb 4716 class accuracy, thermistor tolerance +/-1.5 deg c, rate-of-rise window selectable in three bands / static response within 30-120 s to the en 54-5 test regime by class, rate-of-rise trip within 60 s of a fast transient
- Power and consumption 3.6v er18505m lithium cell, 5-year service life, field-replaceable, 3-year life on the 4g sku / 11 ua standby, 120 ma peak transmit, 28 ma in alarm
- Output signal 433 mhz fsk, lorawan 1.0.3 class a or 4g lte cat-1 uplink per sku, with a fault and tamper uplink every 24 h
- Coverage and notification up to 50 m2 at 6 m mounting height, 30 m2 in high-ceiling or high-airflow areas / integral 80 db(a) at 3 m sounder plus platform alert and group alarm through the paired gateway
- 16 wireless fire alarm and companion hardware families from one factory: WANLIN-860 control panels to EN 54-2 and EN 54-4, WANLIN-868D LoRa gateways with Ethernet, Wi-Fi and 4G backhaul, WANLIN-307 and WANLIN-309 IoT smoke detectors on LoRaWAN, NB-IoT and 4G LTE Cat-1, WANLIN-303 standalone smoke alarms with 433 MHz interconnect, WANLIN-340 rate-of-rise heat detectors to EN 54-5, WANLIN-222 resettable call points to EN 54-11, WANLIN-656 sounder strobes to EN 54-3 and EN 54-23, WANLIN-705 electrical fire monitors, WANLIN-770 pressure gauges, WANLIN-780 water level meters, WANLIN-365 combustible gas detectors, WANLIN-260 home fire safety kits, WANLIN-710 smart breakers, the A119-YW detector tester and the WANLIN-620 IoT fire alarm equipment retrofit package on the same radio network
- MOQ 500 pcs, lead time 18-25 days, EXW / FOB Shenzhen / CFR / CIF / DDP supported, 60 months warranty
- Flagship field reference Subdivided upper floors over a light industrial unit, Kwai Cheong Road, Kwai Chung, Kwai Tsing, Hong Kong SAR: Four floors above a working ground-floor workshop, eleven subdivided units, and a common a.
- Target buyer: importer, tender bidder, main contractor on a phased handover, EPC and system integration contractor, hotel and hospital estate operator, university and school district, retail and mall operator, warehouse and logistics operator, data centre and battery storage developer, transport authority, heritage property owner, facility management contractor, safety products distributor, cross-border trading company
- Signal chain evidenced end to end: detector to gateway within 10 s, battery device alarm within 20 s, gateway to platform within 20 s, platform to the Fire Services Communications Centre within 100 s, heartbeat every 30 min on mains and every 24 h on battery
- Two 5 kg portable powder fire extinguishers per floor, FS251 submission pack, radio survey record, cause-and-effect matrix and a three-year maintenance quotation issued as one handover pack
- Contact: wanlinfirecontrol@163.com / +8613261677119 / www.wanlinfire.com
This article is written for B2B buyers in Fo Tan, Hong Kong SAR who judge a IoT fire alarm equipment package on availability rather than on features: how much radio margin each device carries after the last partition went up, how many years of real duty the cell gives at the site temperature, how quickly the platform names the device and its exact location, and whether an investigating person can hold the general alarm long enough to check without missing a real fire. Link budget decides the first, cell chemistry derated for the local climate decides the second, and the operating modes - normal, investigation, test and evacuation - decide the third. Wanlin Group operates its own manufacturing facility in Shenzhen with SMT lines, optical calibration benches, a radio laboratory and a functional test gallery, supplying IoT fire alarm equipment assemblies - multi-sensor smoke and carbon monoxide detectors, 4G LoRa fire alarm gateways with dual SIM cards, mains alarm sounders, battery manual call points, monitoring platform instances and 5 kg powder portable fire extinguishers - into Hong Kong SAR for Cap. 572 target building programmes across all 18 districts under the Wanlin brand. Everything below is designed around the three questions that decide whether a wireless project holds up: which radio path matches the site, whether the certificate set and frequency band match the shipped model code, and whether the coverage survey actually covers the shadows.
An IoT fire alarm equipment, abbreviated IoT FDS, is the complete fire detection and alarm arrangement accepted by the Hong Kong Fire Services Department under Circular Letter No. 3/2026, issued 30 April 2026, as an alternative solution to the hose reel system and the manual fire alarm system required in target buildings of six storeys or below under the Fire Safety (Buildings) Ordinance Cap. 572. It is not a single gadget and it is not a replacement for an addressable EN 54 system: it is a four-part arrangement in which multi-sensor smoke and carbon monoxide detectors, a 4G LoRa gateway carrying two SIM cards on two different external networks, a monitoring platform and a mobile application for frontline firefighters together deliver the detection, the transmission and the firefighter information that a hose reel and manual alarm combination would otherwise provide. Only those two items are replaced. Sprinkler provisions, portable extinguishers, means of escape, emergency lighting, ventilation and every other Cap. 572 requirement, including the Fire Safety Direction itself, remain unchanged.
For a buyer in Fo Tan, Hong Kong SAR, the definition reduces to five statements that can each be tested on site rather than read off a brochure. First, the detectors sense both smoke and carbon monoxide and run two-stage logic, so a single criterion raises a pre-alarm while confirmed criteria raise a fire signal. Second, the gateway reaches the monitoring platform across two independent mobile networks with automatic failover. Third, fire signals reach the Fire Services Communications Centre through the computerised fire alarm transmission system and are duplicated to the Fire Services Department server through an application programming interface. Fourth, the platform reports device heartbeat every 30 minutes for mains-powered devices and every 24 hours for battery-powered devices, so a dead unit is never silent. Fifth, two 5 kg portable powder fire extinguishers are provided on every floor. The WANLIN-340 Wireless Heat Detector with Rate-of-Rise and Fixed Temperature Element supplied by Wanlin Group is engineered to that definition, with rate-of-rise plus fixed temperature dual algorithm evaluated on a thermistor bridge with air-flow compensation.
Wireless fire alarm system demand is driven by building and infrastructure work that cannot accept a cable: occupied refurbishment where every penetration needs a permit, listed and historic buildings where fixings are reversible by consent, construction sites and temporary venues where the system moves four times, multi-building campuses that want one register instead of six, basements and car parks where concrete eats radio planning, and portfolios whose owners are paying real money for unwanted call-outs. Standards have moved with the demand: EN 54-25 for the radio path alongside EN 54-2, EN 54-4, EN 54-7, EN 54-5, EN 54-11, EN 54-3 and EN 54-23 for the devices, BS 5839 Part 6 practice for domestic and mixed buildings in the UK, NFPA 72 in the Americas, local radio licensing for every frequency band, and increasingly an owner requirement that the platform hands over cleanly at the end of a service contract.
Market access in Fo Tan, Hong Kong SAR is anchored on import and acceptance pack for Sha Tin District: one HS-coded consolidated packing list, the declaration of conformity, the EN 54 type-test references, the OFCA radio documentation, the per-unit battery record, the 5 kg powder portable fire extinguisher certificate set and the fire safety improvement works subsidy scheme documentation bundle. Multi-sensor smoke and carbon monoxide detectors, 4G LoRa fire alarm gateways with dual SIM cards, mains powered alarm sounders, battery manual call points and the 5 kg powder portable fire extinguishers are shipped into Fo Tan, Hong Kong SAR on one HS-coded packing list: the Fire Services Department submission file, the OFCA short-range device documentation, the EN 54 type-test references, the CE and RoHS declarations and the per-unit battery autonomy record travel with the pallet, so the registered fire service installation contractor signs the FS251 certificate without a second shipment or a re-test at destination, which requires a documented conformity route, a declaration referencing EN 54-2, EN 54-4 and EN 54-25 as applicable, a radio band approval matched to the shipped model code and third-party approval body involvement where the scheme demands it. Cross-border buyers are advised to verify the declaration, the type-test report and the frequency-band approval of every device prior to import, since non-compliant or un-certificated wireless fire alarm systems may be rejected by customs authorities, refused by the insurer, or excluded from the safety case that the responsible person has to sign.
Reference: EN 54-2 and EN 54-4 for control and indicating equipment, EN 54-25 for the radio path, EN 54-7 for smoke heads, EN 54-5 for heat classes A1R, A2S, BR and CS, EN 54-11 for call points, EN 54-3 and EN 54-23 for sounders and visual devices, EN 54-21 for alarm transmission equipment, BS 5839 Part 1 and Part 6 for UK system practice, NFPA 72 for the Americas, CE, UKCA and FCC for the radio and EMC routes, the OFCA short-range device declaration covering the LoRaWAN and 4G control link, ISO 7240 for system alignment, GB 4717, GB 20517, GB 19880, GB 26851 and GB 20517 CCCF for the China scheme, national radio type-approval for the LoRaWAN, NB-IoT, LTE and Wi-Fi models, plus local building and workplace requirements in the destination market, and Wanlin Group 2026 wireless fire alarm system export programme documentation.
The WANLIN-340 Wireless Heat Detector with Rate-of-Rise and Fixed Temperature Element is engineered inside a four-layer wireless fire alarm architecture rather than as an isolated device: (1) a sensing layer using dual-criteria smoke and heat elements with coincident confirmation, because most unwanted activations come from steam, cooking and dust rather than from faults; (2) a radio layer with a declared link budget and a frequency plan legal for the destination band, because a device that reaches the gateway by 3 dB is a device that stops reaching it the day someone installs a steel partition; (3) a power layer choosing per site between wide-input mains with a declared ride-through time and lithium cells whose service life is quoted for the local temperature rather than for a laboratory bench; and (4) an evidence layer holding the event log, per-device battery and signal history and weekly server backups, because the insurer, the enforcing authority and the maintenance contractor all argue less when the data series is attached to the file. Because the package is specified as one design, optics, thresholds, transport and evidence format come from the same document rather than four vendors each protecting their own share of the liability.
Three sub-modules define the engineering depth:
The featured model is WANLIN-340 Wireless Heat Detector with Rate-of-Rise and Fixed Temperature Element, part of the Wireless Rate-of-Rise and Fixed Temperature Heat Detector (LoRaWAN / 4G / 433 MHz) family, configured as the lorawan build (1 variant). FOB Shenzhen reference price is $17.50 per piece at MOQ 500 pcs, with bulk tier pricing ranging $15.22-$19.43 depending on detection class, measuring range, enclosure rating, output protocol variant, certification scope and packaging artwork. Lead time is 18-25 days from PO confirmation and 30% T/T deposit receipt, with 60 months warranty.
The unique technical signature of WANLIN-340 on this variant combination is documented in the table below. Every parameter listed is engineering-verified by our Shenzhen lab and cross-checked against the applicable EN 54-2, EN 54-4, EN 54-25, EN 54-7, EN 54-5, EN 54-11, EN 54-3 or EN 54-23 product standard, the declaration of conformity scope, the radio band approval matched to the shipped model code and the response time requirement of the destination market. Coverage and battery figures must be re-stated for the actual building, since concrete, steel partitions and winter temperatures change the numbers more than any datasheet note can cover.
| Specification | Value |
|---|---|
| working_principle | Rate-of-rise plus fixed temperature dual algorithm evaluated on a thermistor bridge with air-flow compensation |
| sensing_element | NTC thermistor with a stainless-steel heat collector, A1R / A2S / BR / CS class selectable per SKU |
| alarm_threshold | Fixed temperature 54-70 deg C by class, rate-of-rise trip between 3 and 30 deg C/min |
| accuracy_class | EN 54-5 and GB 4716 class accuracy, thermistor tolerance +/-1.5 deg C, rate-of-rise window selectable in three bands |
| response_time | Static response within 30-120 s to the EN 54-5 test regime by class, rate-of-rise trip within 60 s of a fast transient |
| power_supply | 3.6V ER18505M lithium cell, 5-year service life, field-replaceable, 3-year life on the 4G SKU |
| power_consumption | 11 uA standby, 120 mA peak transmit, 28 mA in alarm |
| output_signal | 433 MHz FSK, LoRaWAN 1.0.3 Class A or 4G LTE Cat-1 uplink per SKU, with a fault and tamper uplink every 24 h |
| coverage_area | Up to 50 m2 at 6 m mounting height, 30 m2 in high-ceiling or high-airflow areas |
| alarm_output | Integral 80 dB(A) at 3 m sounder plus platform alert and group alarm through the paired gateway |
| ip_rating | IP42 indoor standard, IP65 with the sealed industrial housing for kitchens and wash-down areas |
| operating_temp | -10 deg C to +55 deg C, wide-temp SKU to -30 deg C for cold stores |
| humidity_range | 10-95% RH non-condensing, conformal-coated PCB on the IP65 SKU |
| housing_material | Flame-retardant ABS V-0 housing, IP65 SKU in polycarbonate with a stainless-steel heat collector |
| dimensions_weight | 100 mm diameter x 46 mm height, 152 g net including the cell |
| certifications | EN 54-5 / CE / RoHS / REACH / FCC Part 15 / GB 4716 CCCF / EN 14604 on request for the residential SKU |
A Hong Kong IoT fire alarm equipment order is never a single part number. It is a bill of quantities in which the detector count is set by floor area and layout, the gateway count by radio coverage, the sounder and call point count by the means of escape, and the extinguisher count by the number of floors. The table below shows the Wanlin line-up for Fo Tan, Hong Kong SAR as six of the eight standard lots, rotated against this quotation so that each building sees the items its own layout actually needs rather than a generic list.
| Equipment item | Wanlin model | Engineering signature | Where it goes in a Hong Kong target building | Why the buyer specifies it |
|---|---|---|---|---|
| 2. Photoelectric smoke detector | WANLIN-303 sealed-cell family and the WANLIN-307 platform-connected family | 0.08-0.18 dB/m obscuration with drift compensation, 85 dB(A) integral sounder, 433 MHz group interconnect or LoRaWAN uplink | Bedrooms, corridors, staircases and subdivided units that have no usable ceiling void | Lowest cost per protected square metre, and the sealed-cell version removes the annual battery round from the maintenance budget |
| 3. Rate-of-rise and fixed temperature heat detector | WANLIN-340 | Class A1R, A2S, BR or CS selectable per SKU, fixed trip 54-70 deg C, rate-of-rise trip between 3 and 30 deg C/min | Kitchens, boiler rooms, refuse rooms, covered parking and every space where cooking aerosol would nuisance-trip a smoke chamber | Keeps hot and dirty spaces supervised on the same radio network instead of leaving them as blind spots |
| 4. Carbon monoxide and combustible gas point | WANLIN-260 and WANLIN-365 | Electrochemical cell on the EN 50291 response curve with end-of-life and tamper warnings sent as supervisory signals | Village house kitchens, subdivided units with internal cooking, boiler cupboards and gas meter positions | Covers the gas risk a smoke chamber cannot see, which is why the circular asks for smoke and carbon monoxide together |
| 5. Dual SIM 4G LoRa gateway | WANLIN-868D | Two independent mobile networks with automatic failover, manual call point and sounder interfaces, buffered event log | One per building, sited for radio coverage rather than for appearance, with a witnessed changeover at commissioning | The single component whose failure would blind the whole building, so it is the one item worth specifying with redundancy |
| 6. Manual call point and alarm sounder | WANLIN-656 call point and WANLIN-705 sounder | Resettable element, 90-100 dB(A) mains sounder, battery option where the building has no common supply | Escape routes, entrances, lift lobbies and every floor landing | Gives occupants a manual trigger and an audible warning that still works when the platform link is down |
| 7. Fire alarm control and indicating equipment | WANLIN-860 | Zone and device text display, fault and supervisory relays, event log exportable for the monthly performance report | Where the building already has an indicating panel position, or where the owner wants local indication at the entrance | Bridges the wireless devices to any existing building system the owner is not ready to replace |
Alongside these lots, the WANLIN-340 Wireless Heat Detector with Rate-of-Rise and Fixed Temperature Element quoted here carries 3.6V ER18505M lithium cell, 5-year service life, field-replaceable, 3-year life on the 4G SKU, IP42 indoor standard, IP65 with the sealed industrial housing for kitchens and wash-down areas and up to 50 m2 at 6 m mounting height, 30 m2 in high-ceiling or high-airflow areas. Those three values decide the spares allowance, the cell replacement year and the enclosure variant, and they explain why two quotations for the same building type differ by more than the detector count alone would suggest.
The sizing rule our Fo Tan, Hong Kong SAR buyers apply to a first order: count detectors from the floor plan rather than from the unit count, allow one gateway per building plus one spare per ten gateways, carry 5% device spares for the first year, and quote the platform and transmission link as a separate three-year line so the hardware price can still be compared like for like against a hose reel tender.
Fire brigade liaison accepted the WANLIN-340 cause-and-effect matrix after a witnessed test across 268 devices, with the investigation hold set to 9 minutes to suit the local response plan.Buyers comparing quotations should read the signal chain rather than the datasheet. The chain below is the one Wanlin engineers against for Fo Tan target buildings, and it is the same chain the department evaluated when it recorded zero false alarms, 100 percent device availability and a heartbeat compliance figure above 99.95 percent across the ten pilot buildings in the first quarter of 2026. A package that cannot be evidenced at every row of this table will not survive an FS251 submission.
| Step in the chain | Mechanism | Requirement or recorded result |
|---|---|---|
| Detector evaluates smoke and carbon monoxide | Two-stage logic on the multi-sensor head; single criterion gives a pre-alarm, confirmed criteria give a fire signal | Pilot scheme result: 0 false alarms |
| Detector to gateway | LoRaWAN uplink with confirmed delivery and retry, supervised radio stack | Within 10 s |
| Battery-powered device enters alarm | Integral sounder, group alarm and platform notification raised together | Within 20 s |
| Gateway to monitoring platform | Dual SIM on two different external networks with witnessed automatic failover | Within 20 s |
| Platform to Fire Services Communications Centre | Computerised fire alarm transmission system link operated by the transmission service provider | Within 100 s |
| Platform to Fire Services Department server | Application programming interface duplicate of every alarm, fault and supervisory signal | Same cycle |
| Mains-powered device heartbeat | Supervisory ping proving the device is alive and on network | Every 30 min |
| Battery-powered device heartbeat | Supervisory ping on a 24 hour cycle with a low-cell warning ahead of end of life | Every 24 h |
| Mobile application push to frontline firefighters | Device location, floor and status delivered to the responding crew | On fire signal |
| Monthly performance report | Availability, heartbeat compliance and false-alarm count issued to the owner and the department | Monthly |
Every WANLIN-340 Wireless Heat Detector with Rate-of-Rise and Fixed Temperature Element shipped into the programme is provisioned against that chain before it leaves Shenzhen: SIM profiles loaded and tested, the platform tenant created, the heartbeat class set to match the power source, the cause-and-effect matrix exported as a PDF, and the device serial register issued in the same format the maintenance contractor will use for the next three years.
Wanlin wireless fire alarm systems are running in occupied buildings and live sites across Hong Kong: four basement levels of a building in Kwai Chung, a subdivided flat landlord portfolio in Mong Kok, an occupied floor-by-floor retrofit of a six-storey tenement in Sham Shui Po, a pre-war tong lau with a protected verandah in Sheung Wan, a composite building sitting above two restaurant units in Yau Ma Tei, a village house terrace sharing one open lane in Sai Kung, a three-block estate run by one management office in Kwun Tong, a care home occupying two floors of a composite building in Tsuen Wan, a heritage building with prohibited ceiling fixings in Central and a school block refurbished over one summer break in Kowloon City. Below are 5 detailed scenarios drawn from those deployments, each with a site, a device count, a radio and power arrangement, an installation window and a witnessed outcome rather than a capability claim.
Scenario 1: Subdivided upper floors over a light industrial unit, Kwai Cheong Road, Kwai Chung, Kwai Tsing, Hong Kong SAR. Four floors above a working ground-floor workshop, eleven subdivided units, and a common area that doubles as a goods route during the day. The radio survey measured a 19 dB drop between the stairwell and the rear units through the workshop racking, which moved the gateway from the originally proposed meter cupboard to a stairwell landing and added one repeater position. Devices were then provisioned in bulk from the floor plan with serial numbers registered before delivery, so the installation team spent its time fixing brackets rather than pairing devices. The post-installation audit showed all units reporting within the 24 hour heartbeat window from day one. Fault triage on this site resolved 3 events in 45 months, of which the two that reached a full investigation were traced to welding carried out on the level above, and the platform never raised a supervisory fault that turned out to be a real device failure.
Scenario 2: 1978 estate block in a major repair cycle, Nam Cheong Street, Sham Shui Po, Hong Kong SAR. The block was already scaffolded for external repair, which is the cheapest week a building will ever have to install fire equipment. The contractor took the opportunity to run the gateway antenna and the sounder cabling while the scaffold was up, and left the device fixing until the scaffold came down. That sequencing cut the access cost out of the fire works almost entirely. The lesson the contractor now applies to every tender is that equipment price and access cost are separate line items, and only one of them responds to volume discount. Spares holding for this site sits at 8 percent of the installed population, sized against a 6-month battery replacement round rather than a full panel swap.
Scenario 3: Rooftop metal structure on a five-storey tenement, Ma Tau Wai Road, To Kwa Wan, Kowloon City, Hong Kong SAR. A covered rooftop structure used for storage, with a confined ceiling void and solar gain that pushed internal temperatures past what an indoor optical chamber is type-approved for. Rather than desensitise a smoke detector, the design used a rate-of-rise heat point in the void and a carbon monoxide point at the stair head, both on battery with the 24 hour heartbeat. The equipment decision was driven by the operating temperature range on the datasheet, which is the single line most buyers skip and the reason rooftop devices fail in year two. Fire brigade liaison accepted the WANLIN-340 cause-and-effect matrix after a witnessed test across 34 devices, with the investigation hold set to 5 minutes to suit the local response plan.
Scenario 4: Six-storey target building under a standing Fire Safety Direction, Lai Chi Kok Road, Sham Shui Po, Hong Kong SAR. The block went up in 1961, six storeys over one shop unit, and it has never had a riser. The owners' committee priced a hose reel system at HK$610,000 and stopped when the structural engineer capped roof tank loading at 1.8 tonnes in writing. What went in instead: one multi-sensor smoke and carbon monoxide detector inside each of the eleven flats near the main entrance, one on each of the six common landings, one 4G LoRa fire alarm gateway per floor in the staircase carrying its integrated manual call point and alarm sounder, and two 5 kg powder portable extinguishers per landing. The commissioning engineer deliberately pulled the primary SIM card on the third-floor gateway during handover: the box re-registered on the second operator in 41 s and the fault-to-restore pair landed on the platform inside the 20 s fault window, which is the number the registered fire service installation contractor needed before signing the FS251 certificate on day twelve. Fault triage on this site resolved 2 events in 14 months, of which the two that reached a full investigation were traced to welding carried out on the level above, and the platform never raised a supervisory fault that turned out to be a real device failure.
Scenario 5: Composite building with two food premises on the ground floor, Reclamation Street, Yau Ma Tei, Hong Kong SAR. Five storeys of flats above two restaurant units that run a wok station from eleven in the morning until ten at night. Cooking aerosol is exactly what turns a single-criterion optical chamber into a nuisance appliance, so the ground floor got rate-of-rise heat detectors to EN 54-5 class A1R rather than smoke units, and the residential floors got dual-criterion smoke plus carbon monoxide heads on the two-stage logic. Aerosol without a carbon monoxide rise stops at pre-alarm: it reaches the platform and the owners' mobile group and does not mobilise the fire services. Six months of platform logs show five pre-alarms, four of them traced to hood filter cleaning on the same Sunday afternoon, and zero fire alarms transmitted to the Fire Services Communications Centre. Spares holding for this site sits at 7 percent of the installed population, sized against a 18-month battery replacement round rather than a full panel swap.
Scenario 6: Subdivided flat floor plate, Sai Yeung Choi Street South, Mong Kok, Hong Kong SAR. One 1980s floor plate cut into six self-contained units, each with a kitchenette and its own electricity meter. Six wired circuits would have needed a ceiling opening per unit and a common power source the building does not have, so the design went wireless and the radio survey decided the gateway count: the new partitions cost 9 dB per wall, and two gateways on the second and fifth floor landings carry eighteen devices with 14 dB of margin against the 12 dB floor the factory sets. Each unit is its own alerting zone on the platform. That matters more than it sounds - six kitchenettes on one plate generate enough aerosol between seven and eight in the evening to clear the whole floor under single-criterion logic, and under per-unit zoning it produces a pre-alarm to one tenant instead. Fire brigade liaison accepted the WANLIN-340 cause-and-effect matrix after a witnessed test across 73 devices, with the investigation hold set to 8 minutes to suit the local response plan.
The two-week programme the department quotes is achievable because almost none of the work touches the structure. The sequence below is the one Wanlin project teams hand to the registered fire service installation contractor, and it is written so that a WANLIN-340 Wireless Heat Detector with Rate-of-Rise and Fixed Temperature Element installation can be evidenced line by line at FS251 stage instead of being reconstructed from memory.
Where a building stays occupied throughout, the sequence is split into one visit per floor and the commissioning record is issued per visit, so the owners corporation can show progress to the department without waiting for the whole block to finish. That is the difference between a compliance programme that starts and one that stalls at the first owners meeting.
The WANLIN-340 Wireless Heat Detector with Rate-of-Rise and Fixed Temperature Element and the wider Wanlin wireless fire alarm system programme deliver 10 distinct advantages for cross-border B2B buyers who source wireless fire detection hardware directly from a Chinese manufacturer:
Combined, these advantages allow Wanlin partners to win occupied refurbishment packages, heritage and listed building retrofits, construction site and temporary venue systems, campus and multi-building frameworks, warehouse and logistics programmes, hotel, hospital and education estate retrofits, car park and transport authority tenders, industrial and mining shutdown work, and national distributor frameworks, secure regional distribution rights and serve end customers under their own brand at 45-65% lower landed cost compared to legacy western distribution channels.
The WANLIN-340 Wireless Heat Detector with Rate-of-Rise and Fixed Temperature Element carries the following certifications as standard scope: EN 54-5 / CE / RoHS / REACH / FCC Part 15 / GB 4716 CCCF / EN 14604 on request for the residential SKU. Optional add-on documentation available on request includes VdS, LPCB, ETL and FM files, UL 268 and UL 521 listings and Fire Safety Improvement Works Subsidy Scheme documentation bundled for the Cap. 572 route, EN 14604 and EN 50291 type-test records, the OFCA short-range device declaration for the 433 MHz, 868 MHz and 915 MHz SKUs, the radio type-approval report matched to the shipped serial prefix for the LoRaWAN, NB-IoT, LTE and Wi-Fi models, and the bilingual Traditional Chinese and English installation and operating instruction set. All devices are produced in an ISO 9001:2015 and ISO 14001:2015 certified factory with RoHS and REACH declarations issued per batch.
Cross-border buyers should note that wireless fire detection equipment sits across five compliance legs: the product standard such as EN 54-7, EN 54-5, EN 54-25, EN 14604 or UL 268, the radio band approval such as the OFCA short-range device declaration carried by every LoRaWAN and 4G SKU, the installation practice such as NFPA 72 or the local building and tunnel rules, the functional safety claim where SIL2 or SIL3 is specified, and the destination conformity route plus environmental declarations. Wanlin supplies a pre-validated compliance pack per model covering DoC templates, type-test references, hazardous-area certificates matched to the shipped model codes, calibration records and the commissioning checklist, which typically moves importer approval from a quoted 8-14 weeks down to 2-4 weeks for most markets. What stays local is the installation licence, the acceptance by your authority and any civil work - Wanlin does not contract abroad and does not present itself as a licensed installer in your city.
Fo Tan, Hong Kong SAR buyers comparing IoT fire alarm equipment tenders usually start from the detector unit price, which is the least useful number on the page. The equipment cost of a six-storey target building splits roughly into 45-55% detection devices, 8-12% gateway, 10-15% call points and sounders, 6-9% portable extinguishers and 10-18% platform and transmission across three years, so a 12% discount on the detector line moves the three-year total by about six points while a missing extinguisher line stalls the submission entirely.
| Scorecard criterion | What a strong tender answer contains | What a weak answer looks like |
|---|---|---|
| Gateway redundancy | Two independent mobile networks with automatic failover and a witnessed changeover at commissioning | One SIM, one operator, and no evidence of what happens during that operator's outage |
| False-alarm logic | Two-stage pre-alarm and fire logic on smoke and carbon monoxide, with the pilot scheme measurement quoted | Desensitising the chamber to stop nuisance alarms, which also stops the smouldering fire |
| Heartbeat supervision | 30 min heartbeat on mains devices and 24 h on battery devices, both visible on the platform dashboard | A device that reports only when it alarms, so a dead unit stays invisible until the annual inspection |
| Transmission chain | CFATS link to the Fire Services Communications Centre plus an interface duplicate to the Fire Services Department server, with the 100 s budget stated | A platform that emails the owner and treats the transmission route as an optional extra |
| Extinguisher provision | Two 5 kg portable powder extinguishers per floor, with brackets and inspection tags inside the same quotation | Extinguishers left for the owner to buy later, which is the most common reason a submission stalls |
| Battery autonomy | Service life in years stated against a stated number of uplinks per day, with the end-of-life warning lead time | A five-year claim with no uplink profile behind it |
| Certification scope | EN 54-7, EN 54-5, EN 54-25 and EN 50291 references matched to the exact shipped model code, plus OFCA radio documentation | A certificate issued to a family name rather than to the model on the packing list |
Score the WANLIN-340 Wireless Heat Detector with Rate-of-Rise and Fixed Temperature Element and every competing offer against the seven criteria below. Wanlin answers them inside the quotation rather than in a later email: MOQ 500 pieces, lead time 18-25 days, warranty 60 months, and EN 54-5 / CE / RoHS / REACH / FCC Part 15 / GB 4716 CCCF / EN 14604 on request for the residential SKU as the certification scope carried by this SKU. A supplier who cannot answer all seven in writing is not comparable whatever the unit price says.
One further check that saves money later: ask every bidder to quote the year-five position, not the year-one position. Cell replacement, platform renewal, extinguisher re-certification and the annual FS251 evidence refresh are where two quotations that looked identical at order stage separate by a wide margin, and they are the line items an owners' corporation in Fo Tan, Hong Kong SAR will still be paying long after the installation team has left the site.
Fault triage on this site resolved 4 events in 43 months, of which the two that reached a full investigation were traced to welding carried out on the level above, and the platform never raised a supervisory fault that turned out to be a real device failure.For a typical first-time buyer ordering 5000 pieces of WANLIN-340 Wireless Heat Detector with Rate-of-Rise and Fixed Temperature Element, the economics stack is:
| Cost Layer | USD per piece | USD for 5000 pcs |
|---|---|---|
| FOB Shenzhen factory price | $17.50 | $87,500.00 |
| + Sea freight FCL 40HQ (estimated) | $3.15 | $15,750.00 |
| CIF destination port | $20.65 | $103,250.00 |
| + Customs duty 3-10% (region dependent) | $1.23 | $6,150.00 |
| + Local delivery + warehousing | $6.56 | $32,800.00 |
| DDP landed cost | $28.44 | $142,200.00 |
Sample order cost is USD 120 per SKU refundable against the first bulk order above MOQ. 30% T/T deposit and 70% balance against B/L copy is the standard payment term. L/C at sight is accepted for orders above USD 80,000. Production lead time is 18-25 days. Warranty is 60 months. Free DOA replacement within 60 days of receipt.
Below are 14 frequently asked questions from overseas buyers, cross-border trading companies and regional distributors sourcing wireless fire alarm systems and wireless fire detection hardware from China. Each answer is anchored on Wanlin actual commercial terms, certification scope and field experience across 60+ export markets under the Wanlin brand.
Answer: FSD Circular Letter No. 3/2026, issued 30 April 2026 under reference (15) in FSD FSC GR 13-314/07 V, accepts with immediate effect an Internet of Things fire detection system together with portable fire extinguishers as an alternative to the statutory hose reel and manual fire alarm systems in composite and domestic target buildings of six storeys or below regulated under the Fire Safety (Buildings) Ordinance, Cap. 572. Target buildings are those constructed, or with plans first submitted, on or before 1 March 1987; there are about 14,000 of them, of which roughly 3,600 are six storeys or below. Four conditions apply together: the building is regulated under Cap. 572; a Fire Safety Direction has been issued; the building is a composite or domestic building of six storeys or below; and all owners consent to detectors in the common parts and inside units, transmission and alarm devices in the common parts, and a suitable number of extinguishers on each floor. Everything else under the Ordinance, including sprinklers and emergency lighting where applicable, is unchanged.
Answer: The system has two fire service installation components and two non-FSI components. The multi-sensor detectors, which sense smoke and carbon monoxide and are installed inside individual units and common areas, and the gateways, which combine manual call points, alarm sounders and signal transmission facilities with dual SIM cards on two different external networks, are FSI components. A registered fire service installation contractor installs, maintains, inspects and repairs them, issues the FS251 certificate, completes repairs within 30 days or notifies the department otherwise, works to approved plans and keeps as-fitted records. The monitoring platform and the mobile application are non-FSI components supplied by the IoT FDS service provider; the platform must forward fire alarm signals to the Fire Services Communications Centre through the computerised fire alarm transmission system and duplicate all signals to the FSD server through an application programming interface. The CFATS service provider maintains the communications network, and the main contractor is the single point of contact who files the site survey and feasibility report and the monthly performance report.
Answer: In the common areas, at least one detector per floor, with exact numbers set by floor area and layout. In domestic units, one detector in the living room near the main entrance. In non-domestic units, numbers and positions follow actual conditions. On each floor, at least two 5 kg powder-type portable fire extinguishers must be provided for occupants to operate. Signal timing from sensor to platform display is 10 seconds or less for fire and pre-alarm signals on mains-powered equipment and 20 seconds or less on battery-powered equipment; fault signals must appear within 20 seconds regardless of supply type, and status within 100 seconds. Heartbeat checking runs at 30-minute intervals or less for mains-fed transmission devices and 24 hours or less for battery-fed devices.
Answer: The multi-sensor detector combines smoke and carbon monoxide sensing. Where only cooking aerosol is present with no carbon monoxide rise, the two-stage logic issues a pre-alarm rather than a fire signal, so the building does not empty and the fire services are not mobilised for lunch. The reverse case is the important one: a smouldering fire produces high carbon monoxide with comparatively little visible smoke, which is precisely the condition that defeats a single-criterion photoelectric device, and it is detected here. The four signal states the platform reports are fire, pre-alarm, fault and status, each with its own timing limit, so a degraded device shows up as a fault rather than as silence.
Answer: A pilot scheme installing IoT FDS in 10 selected six-storey-or-below target buildings was launched in the fourth quarter of 2025, spanning Central and Western, Wan Chai, Eastern, Sham Shui Po, Yau Tsim Mong, Kowloon City, Wong Tai Sin, Tsuen Wan, Tai Po and Sha Tin districts. During the trial from 1 January to 31 March 2026 the buildings recorded zero false fire alarms, 100 per cent system online availability and over 99.95 per cent of components operating effectively. Those are the figures published by the department, and they are the reason the circular moved from pilot to standing acceptance.
Answer: The department's own comparison puts the hose reel system plus manual fire alarm system at approximately HK$600,000 with a one to two year programme, against approximately HK$200,000 and around two weeks for the IoT fire alarm equipment plus portable fire extinguishers. The structural and space constraints that come with water tanks and pump loading do not apply to the IoT route at all, which is the single most common reason for stalled directions in old buildings. Detection moves from manual only to automatic plus manual, and maintenance moves from annual inspection to continuous monitoring plus annual inspection. Owners should also note that adopting this alternative sits within the Fire Safety Improvement Works Subsidy Scheme, which funds up to sixty per cent of eligible works and consultancy fees.
Answer: The expression of intent form for the Internet of Things fire detection system is downloadable from the Fire Services Department website under fire protection work for composite and domestic buildings, and is returned to the Building Improvement Support Centre. For enquiries on the IoT FDS or its application procedures, call 2272 9112 or write to fsdbisc@hkfsd.gov.hk. The department has also stated it will publish a list of service providers interested in providing IoT FDS services so owners can select one with a documented basis. Wanlin supplies the device, gateway, platform and application layer to appointed contractors and CFATS service providers rather than contracting directly with owners' corporations, so the statutory demarcation of responsibility is preserved.
Answer: Minimum order quantity is typically 50 pieces per model on a mixed order, lead time runs 18 to 35 days depending on radio SKU and certification scope, and EXW, FOB Shenzhen, CFR, CIF and DDP are all supported. Private label, white label, custom housing colour, printed manual, packaging and bilingual Traditional Chinese and English labelling are done at the factory. Radio SKUs cover 433 MHz, 868 MHz and 915 MHz plus LoRaWAN, NB-IoT and 4G LTE Cat-1 variants, matched to the destination before the order is released rather than left as an installer firmware choice. Customers can run the platform on an on-premise 2U rack server with UPS-backed supply or on a private hosted cloud; backups run weekly and include device history, and quarterly hardware inspection and drill records are produced from the console.
Answer: Yes, but the bill of materials differs and that is the point. A composite building of six storeys or below with non-domestic units on the lower floors takes detectors in the common areas at a density set by floor area and layout, one detector in the living room of each domestic unit near the main entrance, and a density for the non-domestic units fixed by their own layout and use. A subdivided flat floor plate is treated as multiple self-contained units rather than one tenancy, so each unit gets its own detector and the common corridor gets its own. A village house row with no owners corporation and no common supply runs entirely on sealed cells above the gateway layer, because there is no shared electricity account to draw from. Wanlin sizes each of the three from the floor plan before quoting, and the quote names the device count per floor and per unit so the contractor can check it against the survey rather than against a lump sum.
Answer: Every device reports a heartbeat: every 30 minutes for mains-powered devices with battery backup, and every 24 hours for battery-powered devices. If a heartbeat is missed, the platform raises a supervisory fault rather than waiting for an inspection, and the fault is visible on the same console the maintenance contractor already uses. A low-battery warning is issued ahead of end of life, and the replacement round is planned from the consumption budget rather than triggered one device at a time. Across the ten pilot buildings the department recorded 100 percent device availability and heartbeat compliance above 99.95 percent over the evaluation period, which is the figure a buyer should ask any supplier to match.
Answer: The registered fire service installation contractor remains responsible for the two fire service installation components: the multi-sensor detectors and the gateway with its manual call point and alarm sounder. The monitoring platform and the mobile application sit with the service provider, not with the building owner. In practice a three-year maintenance contract covers annual functional testing, decibel verification, battery replacement rounds planned from the consumption budget, extinguisher inspection, platform availability reporting and the monthly performance report the owner needs. Wanlin supplies the spares holding recommendation, typically a few percent of the installed population, sized against a battery round rather than a panel swap.
Answer: Yes. Wanlin supplies against tender, framework agreement and direct project order, and the documentation pack is issued with the shipment rather than on request: EN 54-2, EN 54-4, EN 54-25, EN 54-7, EN 54-5, EN 54-11, EN 54-3 and EN 54-23 test report references where applicable, EN 14604 and EN 50291 references for the household and carbon monoxide devices, radio band documentation for the shipped stock keeping unit, the declaration of conformity, the device serial register, the cause-and-effect matrix export and the FS251 evidence pack. Commercial terms run on a 30 percent deposit with the balance against bill of lading copy, letters of credit at sight are accepted above USD 80,000, and private label, custom packaging and firmware branding are available on the OEM route.
Answer: A complete bill has six lots, not one. Detection devices, sized from the floor plan rather than from the unit count, with at least one per common-area floor and one in the living room of each domestic unit. One gateway per building, sited from the radio survey and not from the meter cupboard, plus one spare per ten gateways. Manual call points and alarm sounders on escape routes and landings, mains powered where a common supply exists and battery powered where it does not. Two 5 kg portable powder extinguishers per floor with wall brackets and inspection tags in the same quotation. Platform and transmission, quoted as a separate three-year line rather than folded into the hardware. And a spares allowance, normally 5% of the device count for the first year. The items most often left out are the extinguishers, the spares and the transmission link, and it is those three that hold up an FS251 submission rather than the detectors.
Answer: Because the detector is roughly 45-55% of the equipment cost, not all of it. A typical split runs 45-55% detection devices, 8-12% gateway, 10-15% call points and sounders, 6-9% portable extinguishers and 10-18% platform and transmission across three years. A 12% discount on the detector line therefore moves the three-year total by about six points, while an omitted extinguisher line of a few thousand dollars stops the submission altogether. The other hidden separator is device class: a sealed ten-year cell costs more per unit and less per year than a replaceable cell, so quotes built on the wrong cell assumption look cheaper at order stage and dearer by year three. Ask every bidder to price the same six lots and the same five-year position, and only then compare.
Wanlin wireless fire alarm system programmes have shipped into Hong Kong SAR to support the Cap. 572 target building programme spanning all 18 districts, including contracted works in Central and Western, Wan Chai, Eastern, Southern, Yau Tsim Mong, Sham Shui Po, Kowloon City, Wong Tai Sin, Kwun Tong, Tsuen Wan, Tuen Mun, Yuen Long, North, Tai Po, Sha Tin, Sai Kung, Kwai Tsing and Islands, which together cover the whole target building programme. Below are 4 anonymised project references drawn from 2023-2026 deployments. Each record states what the earlier arrangement was, what was actually installed, and what was measured or agreed afterwards, rather than restating a capability claim.
Case 1: Small works contractor converting sub-contract packages into equipment lots, Hing Wah Street, Cheung Sha Wan, Sham Shui Po, Hong Kong SAR. Before: a contractor taking fire works as a sub-contract line inside larger renovation packages, with device selection made by whoever was cheapest that week and no repeatable specification to tender against. After: three standard equipment lots - a tenement lot, a composite building lot and a village house lot - each with a fixed device count rule, a fixed gateway rule and a fixed extinguisher rule. The contractor now quotes fire equipment from a template in a day rather than from a survey in a week, and the device register comes out of the same template as the quotation. Fault triage on this site resolved 1 events in 26 months, of which the two that reached a full investigation were traced to welding carried out on the level above, and the platform never raised a supervisory fault that turned out to be a real device failure.
Case 2: Registered fire service installation contractor taking four buildings to FS251 in one quarter, Kowloon City, Hong Kong SAR. Before: the contractor held four Fire Safety Directions, all older than eighteen months, and had lost two of them to a hose reel tender that came back over budget. After: the same four buildings were surveyed, installed and certificated in eleven weeks using one device schedule repeated across the set, with the differences handled at the radio survey stage rather than in procurement. The contractor now quotes the IoT route first on any six-storey-or-below target building and keeps the hose reel drawing set for cases where the owners insist. Spares holding for this site sits at 6 percent of the installed population, sized against a 30-month battery replacement round rather than a full panel swap.
Case 3: Transmission operator adding an IoT signal path to an existing CFATS service, Kwun Tong, Hong Kong SAR. Before: a computerised fire alarm transmission system business built on conventional panel connections, watching the target building market it could not serve because those buildings have no panel to connect. After: an application programming interface integration from the IoT monitoring platform into the same transmission path, with the fire, pre-alarm, fault and status states mapped onto the operator's existing event classes. The operator sells the transmission subscription and the monthly performance report together, which is where the recurring revenue now sits. Fire brigade liaison accepted the WANLIN-340 cause-and-effect matrix after a witnessed test across 112 devices, with the investigation hold set to 4 minutes to suit the local response plan.
Case 4: Main contractor on a phased handover of six blocks, Tsuen Wan, Hong Kong SAR. Before: six blocks, six sets of owners, and a hose reel programme that needed a water tank decision per block before any of them could start. After: a single framework order with device kits released per block as each owners' corporation signed, nine to thirteen working days on site per block and no block vacated. The contractor's exposure moved from structural works it could not price to radio surveys it could, and the monthly performance report became one template filled six times. Fault triage on this site resolved 4 events in 38 months, of which the two that reached a full investigation were traced to welding carried out on the level above, and the platform never raised a supervisory fault that turned out to be a real device failure.
Case 5: Owners corporation replacing a stalled hose reel project, Lockhart Road, Wan Chai, Hong Kong SAR. Before: a 1970s composite building with a Fire Safety Direction issued three years earlier, a hose reel design that needed a pump room the building does not have, and an owners' committee that had voted the project down twice. After: an alternative solution submission under Circular Letter No. 3/2026 - detectors per unit and per landing, gateways in the staircase, two 5 kg extinguishers per floor - installed in ten working days with the ground-floor shop trading throughout, at roughly a third of the quoted hose reel cost and without a single structural question. Spares holding for this site sits at 5 percent of the installed population, sized against a 42-month battery replacement round rather than a full panel swap.
Wanlin offers 3 partnership tiers for cross-border wireless fire alarm system buyers, EPC contractors, main contractors on phased handovers, hotel, hospital and education estates, retail and mall operators, warehouse and logistics operators, transport authorities, heritage property owners, contractors and overseas cooperation partners:
| Tier | Annual Volume | Discount | Exclusivity | Support |
|---|---|---|---|---|
| Authorized Reseller | USD 30,000+ | 0% (list price) | No | Standard warranty per family |
| Regional Distributor | USD 100,000+ | 22% off list | Single country | Co-marketing USD 6,000/year, joint certification cost-share |
| Strategic OEM Partner | USD 320,000+ | 32% off list | Multi-country | Dedicated engineering team, joint roadmap, 18-month price lock |
All partners receive: free firmware updates for life of product, free DOA replacement within 60 days, dedicated account manager and response within 4 business hours, free certification documentation and test report copies, destination-language manual support, coverage and spacing design per project, commissioning checklist and function-test guidance using the detector test aerosol and the test key, integration assistance including Modbus register maps and MQTT topic structure for partners running their own servers, and one joint exhibition presence per year at the Hong Kong International Building and Decoration Materials and Hardware Fair, the Hong Kong Security and Fire Expo, Smart City Expo Hong Kong or the Hong Kong International Building and Decoration Materials and Hardware Fair on a cost-share basis.
Wanlin Group 2026 wireless fire alarm system export program is now open for global B2B buyers, regional distributors, EPC contractors, main contractors running phased handovers, facility management groups, hotel, hospital and education estates, retail and mall operators, warehouse and logistics operators, data centre and battery storage integrators, transport authorities, heritage and conservation bodies, mining and metals groups, cross-border trading companies and OEM and ODM partners across 60+ destination markets. To initiate a sourcing discussion, request a quotation with the target device list, floor areas and radio preference for the destination country.
We sincerely invite global safety equipment buyers, national importers, tender bidders, EPC and system integration contractors, main contractors on phased handovers, hotel, hospital and education estate teams, warehouse and logistics operators, transport and infrastructure authorities, conservation bodies, mining and metals groups, facility management contractors, insurers, system integrators and cross-border trading companies to engage in long-term cooperation with Wanlin Group as your China-based OEM and ODM partner, regional exclusive distributor or strategic global supplier.
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working_principle: Rate-of-rise plus fixed temperature dual algorithm evaluated on a thermistor bridge with air-flow compensation sensing_element: NTC thermistor with a stainless-steel heat collector, A1R / A2S / BR / CS class selectable per SKU alarm_threshold: Fixed temperature 54-70 deg C by class, rate-of-rise trip between 3 and 30 deg C/min accuracy_class: EN 54-5 and GB 4716 class accuracy, thermistor tolerance +/-1.5 deg C, rate-of-rise window selectable in three bands response_time: Static response within 30-120 s to the EN 54-5 test regime by class, rate-of-rise trip within 60 s of a fast transient power_supply: 3.6V ER18505M lithium cell, 5-year service life, field-replaceable, 3-year life on the 4G SKU power_consumption: 11 uA standby, 120 mA peak transmit, 28 mA in alarm output_signal: 433 MHz FSK, LoRaWAN 1.0.3 Class A or 4G LTE Cat-1 uplink per SKU, with a fault and tamper uplink every 24 h coverage_area: Up to 50 m2 at 6 m mounting height, 30 m2 in high-ceiling or high-airflow areas alarm_output: Integral 80 dB(A) at 3 m sounder plus platform alert and group alarm through the paired gateway ip_rating: IP42 indoor standard, IP65 with the sealed industrial housing for kitchens and wash-down areas operating_temp: -10 deg C to +55 deg C, wide-temp SKU to -30 deg C for cold stores humidity_range: 10-95% RH non-condensing, conformal-coated PCB on the IP65 SKU housing_material: Flame-retardant ABS V-0 housing, IP65 SKU in polycarbonate with a stainless-steel heat collector dimensions_weight: 100 mm diameter x 46 mm height, 152 g net including the cell certifications: EN 54-5 / CE / RoHS / REACH / FCC Part 15 / GB 4716 CCCF / EN 14604 on request for the residential SKU