Customer Service Hotline:
+8613261677119
+8613261677119
The WANLIN-309 Platform-Connected Photoelectric Smoke Detector with MQTT and API Integration is supplied to this specification: IP rating IP42 indoor standard, IP54 with the sealed base gasket; Operating temperature -10 deg C to +55 deg C, optional -25 deg C wide-temp firmware and cell for unheated warehouses; Humidity range 10-95% RH non-condensing; Housing material Flame-retardant ABS V-0 housing, UV-stabilised white finish, QR-coded label with the device EUI for bulk commissioning; Dimensions and weight 104 mm diameter x 50 mm height, 186 g net including cells; Alarm threshold 0.08-0.15 dB/m obscuration, three software levels, pre-alarm and fault thresholds reconfigurable from the platform; Accuracy class EN 14604 and GB 20517 responsiveness, drift log resolution 0.01 dB/m, remote chamber health verification every 24 h; Response time Alarm within 8-30 s to EN 14604 test fires, confirmed uplink acknowledgement within 6 s on LoRaWAN SF8 and within 10 s on 4G LTE Cat-1; Power supply Dual 3.6V ER18505M cells in parallel, 6-year service life at 24 uplinks per day, field-replaceable; Power consumption 14 uA standby, 210 mA peak transmit on 4G, 32 mA in alarm; Output signal LoRaWAN 1.0.3 Class A or 4G LTE Cat-1 MQTT plus REST API webhook, JSON payload with device ID, RSSI, battery, chamber value and event code. As of September 29, 2026, Wanlin Group (Shenzhen, China) officially launches its 2026 Hong Kong wireless fire alarm system export programme, featuring the WANLIN-309 Platform-Connected Photoelectric Smoke Detector with MQTT and API Integration 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: photoelectric light-scattering detection with a dual-wavelength chamber, on-board temperature compensation and a supervised radio stack with confirmed uplinks. Dimensions and weight: 104 mm diameter x 50 mm height, 186 g net including cells, which is small enough to mount on a subdivided unit ceiling without a new fixing plate. Alarm threshold: 0.08-0.15 dB/m obscuration, three software levels, pre-alarm and fault thresholds reconfigurable from the platform, set so that one criterion raises a pre-alarm while confirmed smoke plus carbon monoxide raises the fire signal. Accuracy class: EN 14604 and GB 20517 responsiveness, drift log resolution 0.01 dB/m, remote chamber health verification every 24 h, which is the class written into the acceptance file before the device count is signed off. Response time: alarm within 8-30 s to EN 14604 test fires, confirmed uplink acknowledgement within 6 s on LoRaWAN SF8 and within 10 s on 4G LTE Cat-1, which sits inside the transmission chain the department evaluates, from detector to gateway through to the communications centre. Power supply: Dual 3.6V ER18505M cells in parallel, 6-year service life at 24 uplinks per day, field-replaceable, which is the reason a building with no riser and no spare way on the distribution board can still reach compliance. Power consumption: 14 uA standby, 210 mA peak transmit on 4G, 32 mA in alarm, which is the drain the monthly performance report tracks, so a failing cell is changed before it goes silent. Output signal: LoRaWAN 1.0.3 Class A or 4G LTE Cat-1 MQTT plus REST API webhook, JSON payload with device ID, RSSI, battery, chamber value and event code, 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 80 m2 at 6 m mounting height, 60 m2 in corridors and open-plan floors, which is what stops a subdivided unit from ending up with its detector in the wrong half of the room. Alarm output: Integral 85 dB(A) at 3 m sounder plus platform escalation to SMS, voice call, email and third-party ARC monitoring, 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, IP54 with the sealed base gasket, 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, optional -25 deg C wide-temp firmware and cell for unheated warehouses, which is the window the three-year warranty is written against. Certifications: EN 14604 / CE / RoHS / REACH / FCC Part 15 / GB 20517 CCCF / LoRaWAN Alliance certified / MQTT over TLS 1.2.
Executive summary - 12 buyer-relevant points:
- Flagship model WANLIN-309 Platform-Connected Photoelectric Smoke Detector with MQTT and API Integration, photoelectric light-scattering detection with a dual-wavelength chamber, on-board temperature compensation and a supervised radio stack with confirmed uplinks
- Sensing element dual infrared plus blue led optical chamber with an on-board ntc for temperature-compensated sensitivity and a drift log readable over the air
- Alarm threshold 0.08-0.15 db/m obscuration, three software levels, pre-alarm and fault thresholds reconfigurable from the platform
- Accuracy and response en 14604 and gb 20517 responsiveness, drift log resolution 0.01 db/m, remote chamber health verification every 24 h / alarm within 8-30 s to en 14604 test fires, confirmed uplink acknowledgement within 6 s on lorawan sf8 and within 10 s on 4g lte cat-1
- Power and consumption dual 3.6v er18505m cells in parallel, 6-year service life at 24 uplinks per day, field-replaceable / 14 ua standby, 210 ma peak transmit on 4g, 32 ma in alarm
- Output signal lorawan 1.0.3 class a or 4g lte cat-1 mqtt plus rest api webhook, json payload with device id, rssi, battery, chamber value and event code
- Coverage and notification up to 80 m2 at 6 m mounting height, 60 m2 in corridors and open-plan floors / integral 85 db(a) at 3 m sounder plus platform escalation to sms, voice call, email and third-party arc monitoring
- 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 detection system retrofit package on the same radio network
- MOQ 300 pcs, lead time 20-28 days, EXW / FOB Shenzhen / CFR / CIF / DDP supported, 60 months warranty
- Flagship field reference 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.
- 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 Stanley, Hong Kong SAR who judge a IoT fire detection system 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 detection system 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 detection system, 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 Stanley, 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-309 Platform-Connected Photoelectric Smoke Detector with MQTT and API Integration supplied by Wanlin Group is engineered to that definition, with photoelectric light-scattering detection with a dual-wavelength chamber, on-board temperature compensation and a supervised radio stack with confirmed uplinks.
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 Stanley, Hong Kong SAR is anchored on compliance pack assembled for Southern District: the Fire Services Department IoT circular reference, the Buildings Department minor works item, the OFCA frequency record for regional telecommunications networks, the EN 54 type-test references, the per-unit battery autonomy calculation and the monthly performance report template the main contractor has to file. 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 Stanley, 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-309 Platform-Connected Photoelectric Smoke Detector with MQTT and API Integration 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-309 Platform-Connected Photoelectric Smoke Detector with MQTT and API Integration, part of the IoT Platform-Connected Photoelectric Smoke Detector for Project and Platform Deployment family, configured as the lorawan platform build (1 variant). FOB Shenzhen reference price is $24.50 per piece at MOQ 300 pcs, with bulk tier pricing ranging $21.32-$27.20 depending on detection class, measuring range, enclosure rating, output protocol variant, certification scope and packaging artwork. Lead time is 20-28 days from PO confirmation and 30% T/T deposit receipt, with 60 months warranty.
The unique technical signature of WANLIN-309 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 | Photoelectric light-scattering detection with a dual-wavelength chamber, on-board temperature compensation and a supervised radio stack with confirmed uplinks |
| sensing_element | Dual infrared plus blue LED optical chamber with an on-board NTC for temperature-compensated sensitivity and a drift log readable over the air |
| alarm_threshold | 0.08-0.15 dB/m obscuration, three software levels, pre-alarm and fault thresholds reconfigurable from the platform |
| accuracy_class | EN 14604 and GB 20517 responsiveness, drift log resolution 0.01 dB/m, remote chamber health verification every 24 h |
| response_time | Alarm within 8-30 s to EN 14604 test fires, confirmed uplink acknowledgement within 6 s on LoRaWAN SF8 and within 10 s on 4G LTE Cat-1 |
| power_supply | Dual 3.6V ER18505M cells in parallel, 6-year service life at 24 uplinks per day, field-replaceable |
| power_consumption | 14 uA standby, 210 mA peak transmit on 4G, 32 mA in alarm |
| output_signal | LoRaWAN 1.0.3 Class A or 4G LTE Cat-1 MQTT plus REST API webhook, JSON payload with device ID, RSSI, battery, chamber value and event code |
| coverage_area | Up to 80 m2 at 6 m mounting height, 60 m2 in corridors and open-plan floors |
| alarm_output | Integral 85 dB(A) at 3 m sounder plus platform escalation to SMS, voice call, email and third-party ARC monitoring |
| ip_rating | IP42 indoor standard, IP54 with the sealed base gasket |
| operating_temp | -10 deg C to +55 deg C, optional -25 deg C wide-temp firmware and cell for unheated warehouses |
| humidity_range | 10-95% RH non-condensing |
| housing_material | Flame-retardant ABS V-0 housing, UV-stabilised white finish, QR-coded label with the device EUI for bulk commissioning |
| dimensions_weight | 104 mm diameter x 50 mm height, 186 g net including cells |
| certifications | EN 14604 / CE / RoHS / REACH / FCC Part 15 / GB 20517 CCCF / LoRaWAN Alliance certified / MQTT over TLS 1.2 |
Buyers comparing quotations should read the signal chain rather than the datasheet. The chain below is the one Wanlin engineers against for Stanley 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-309 Platform-Connected Photoelectric Smoke Detector with MQTT and API Integration 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: 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. Radio margin on this network was rechecked at 21 months: 91 percent of the 236 WANLIN-309 devices still report RSSI better than minus 86 dBm, and the 1 devices that drifted were resolved by antenna relocation inside 7 days.
Scenario 2: 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. Commissioning notes put 249 WANLIN-309 devices on this network, with the worst-case hop count at 4 and the longest replace-battery interval logged at 25 months on the Stanley delivery route.
Scenario 3: Village house row with no owners corporation, Tai Om Village, Tai Po, Hong Kong SAR. Three village houses sharing a lane, no management entity, no common supply and no appetite among the owners for a shared electricity account. Everything above the gateway layer runs on sealed three-year lithium cells with a twenty-four hour heartbeat, and the two gateways are mains fed from whichever house has a spare fused way, with the cost split three ways. The lane is open to rain, so the detectors and call points are the IP67 variant throughout and the extinguishers sit in wall brackets under the eaves rather than inside the houses. The platform splits the cluster into per-house zones with separate SMS recipients, because a fire signal going to an owner who lives in Kowloon helps nobody who is standing in the lane. Battery accounting assumes 29 months at 56 percent of budget across the WANLIN-309 population, pushing the first replacement round to 2027 rather than a truck roll per device.
Scenario 4: Building in a pilot-scheme district, Hill Road, Sai Wan, Central and Western District, Hong Kong SAR. Central and Western was one of the ten districts covered when the Fire Services Department installed IoT fire detection systems in ten selected target buildings of six storeys or below in the fourth quarter of 2025 and evaluated them from 1 January to 31 March 2026. The published results were zero false alarms, 100 per cent system availability and better than 99.95 per cent effective component operation. A building on this street runs the same pattern the pilot measured: mains-fed common-area devices reporting heartbeat every 30 minutes, battery devices every 24 hours, fault within 20 s and status within 100 s, with the main contractor filing a monthly performance report that is the document the department actually reads rather than the commissioning certificate. Radio margin on this network was rechecked at 33 months: 85 percent of the 275 WANLIN-309 devices still report RSSI better than minus 86 dBm, and the 4 devices that drifted were resolved by antenna relocation inside 4 days.
Scenario 5: Single-staircase tenement with elderly tenants, Ngo Cheung Street, To Kwa Wan, Kowloon City, Hong Kong SAR. One staircase, twenty-three households, and a resident profile where a full evacuation takes considerably longer than a drill sheet assumes. The design answer is the two-stage logic plus the mobile application: a single-criterion pre-alarm goes to the floor warden and the owners' group, and only smoke-and-carbon-monoxide coincidence or a second confirming device escalates to a building-wide alarm and a transmission to the Fire Services Communications Centre. On arrival, the crew opens the application and sees which device triggered, which floor it sits on and when it last reported a heartbeat, instead of knocking on twenty-three doors. The measured end-to-end time from detector threshold to signal acknowledgement at the communications centre was 8 s on the mains-fed landing devices during the acceptance test. Commissioning notes put 28 WANLIN-309 devices on this network, with the worst-case hop count at 4 and the longest replace-battery interval logged at 37 months on the Stanley delivery route.
Scenario 6: Ground-floor cafe with a rear extraction duct under the flats, Castle Peak Road, Tsuen Wan, Hong Kong SAR. A five-storey block with a cafe below and a duct that discharges directly under the staircase soffit. This is the layout that produces the most nuisance activations in the whole programme, so the detector nearest the duct was specified on the lower sensitivity level and the two-stage logic was set to hold a pre-alarm for a fixed investigation window before any general alarm. The kitchen extraction was logged as a known cause in the cause-and-effect matrix so the fire brigade sees it on the mobile application rather than discovering it at the door. Battery accounting assumes 41 months at 24 percent of budget across the WANLIN-309 population, pushing the first replacement round to 2030 rather than a truck roll per device.
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-309 Platform-Connected Photoelectric Smoke Detector with MQTT and API Integration 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-309 Platform-Connected Photoelectric Smoke Detector with MQTT and API Integration 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-309 Platform-Connected Photoelectric Smoke Detector with MQTT and API Integration carries the following certifications as standard scope: EN 14604 / CE / RoHS / REACH / FCC Part 15 / GB 20517 CCCF / LoRaWAN Alliance certified / MQTT over TLS 1.2. 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.
For a typical first-time buyer ordering 3000 pieces of WANLIN-309 Platform-Connected Photoelectric Smoke Detector with MQTT and API Integration, the economics stack is:
| Cost Layer | USD per piece | USD for 3000 pcs |
|---|---|---|
| FOB Shenzhen factory price | $24.50 | $73,500.00 |
| + Sea freight FCL 40HQ (estimated) | $4.41 | $13,230.00 |
| CIF destination port | $28.91 | $86,730.00 |
| + Customs duty 3-10% (region dependent) | $1.72 | $5,160.00 |
| + Local delivery + warehousing | $9.19 | $27,570.00 |
| DDP landed cost | $39.82 | $119,460.00 |
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 20-28 days. Warranty is 60 months. Free DOA replacement within 60 days of receipt.
Below are 12 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 detection system 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.
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: Property management company standardising nine buildings onto one platform, Kwai Chung, Hong Kong SAR. Before: nine buildings, nine paper log books, nine annual inspection dates and no way to tell between inspections whether a device in any of them was still alive. After: one platform tenant with a building per site folder, a single dashboard showing heartbeat compliance across the whole portfolio, and a fault queue that replaced the log book. The measurable change was in the maintenance round, which went from scheduled visits to condition-based ones. Radio margin on this network was rechecked at 45 months: 94 percent of the 54 WANLIN-309 devices still report RSSI better than minus 86 dBm, and the 3 devices that drifted were resolved by antenna relocation inside 10 days.
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. Commissioning notes put 67 WANLIN-309 devices on this network, with the worst-case hop count at 4 and the longest replace-battery interval logged at 6 months on the Stanley delivery route.
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. Battery accounting assumes 10 months at 33 percent of budget across the WANLIN-309 population, pushing the first replacement round to 2029 rather than a truck roll per device.
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. Radio margin on this network was rechecked at 14 months: 88 percent of the 93 WANLIN-309 devices still report RSSI better than minus 86 dBm, and the 2 devices that drifted were resolved by antenna relocation inside 7 days.
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. Commissioning notes put 106 WANLIN-309 devices on this network, with the worst-case hop count at 4 and the longest replace-battery interval logged at 18 months on the Stanley delivery route.
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 #rega:433# 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.
Article signature:
working_principle: Photoelectric light-scattering detection with a dual-wavelength chamber, on-board temperature compensation and a supervised radio stack with confirmed uplinks sensing_element: Dual infrared plus blue LED optical chamber with an on-board NTC for temperature-compensated sensitivity and a drift log readable over the air alarm_threshold: 0.08-0.15 dB/m obscuration, three software levels, pre-alarm and fault thresholds reconfigurable from the platform accuracy_class: EN 14604 and GB 20517 responsiveness, drift log resolution 0.01 dB/m, remote chamber health verification every 24 h response_time: Alarm within 8-30 s to EN 14604 test fires, confirmed uplink acknowledgement within 6 s on LoRaWAN SF8 and within 10 s on 4G LTE Cat-1 power_supply: Dual 3.6V ER18505M cells in parallel, 6-year service life at 24 uplinks per day, field-replaceable power_consumption: 14 uA standby, 210 mA peak transmit on 4G, 32 mA in alarm output_signal: LoRaWAN 1.0.3 Class A or 4G LTE Cat-1 MQTT plus REST API webhook, JSON payload with device ID, RSSI, battery, chamber value and event code coverage_area: Up to 80 m2 at 6 m mounting height, 60 m2 in corridors and open-plan floors alarm_output: Integral 85 dB(A) at 3 m sounder plus platform escalation to SMS, voice call, email and third-party ARC monitoring ip_rating: IP42 indoor standard, IP54 with the sealed base gasket operating_temp: -10 deg C to +55 deg C, optional -25 deg C wide-temp firmware and cell for unheated warehouses humidity_range: 10-95% RH non-condensing housing_material: Flame-retardant ABS V-0 housing, UV-stabilised white finish, QR-coded label with the device EUI for bulk commissioning dimensions_weight: 104 mm diameter x 50 mm height, 186 g net including cells certifications: EN 14604 / CE / RoHS / REACH / FCC Part 15 / GB 20517 CCCF / LoRaWAN Alliance certified / MQTT over TLS 1.2