Customer Service Hotline:
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The WANLIN-780 Wireless Liquid Level Meter for Fire Water Tanks and Foam Tanks ships with these headline parameters: Power supply 3.6V ER34615 lithium cell, 3-year service life at a 15 min report interval, or 24V DC loop power on the wired variant, Power consumption 30 uA standby, 120 mA peak transmit, Output signal 4G LTE Cat-1 uplink with MQTT plus RS485 Modbus RTU, ultrasonic 0-10 m range for open tanks and reservoirs, Coverage area Ultrasonic measuring range 0-10 m with a 0.5 m dead band, up to 48 meters per gateway, Alarm output Local LCD level readout plus platform alert, SMS and pump-room annunciator relay output, IP rating IP68 submersible probe, IP65 electronics housing, Operating temperature -10 deg C to +60 deg C process, -10 deg C to +55 deg C ambient electronics, Humidity range 10-95% RH non-condensing, probe rated for permanent immersion, Housing material 316L stainless-steel probe body with a polycarbonate V-0 electronics housing and a PUR vented cable, Dimensions and weight Probe 28 mm diameter x 132 mm length with a 10 m cable, 920 g net. As of September 28, 2026, Wanlin Group (Shenzhen, China) officially launches its 2026 Hong Kong wireless fire alarm system export programme, featuring the WANLIN-780 Wireless Liquid Level Meter for Fire Water Tanks and Foam Tanks 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.
Core parameters: WANLIN-780 Wireless Liquid Level Meter for Fire Water Tanks and Foam Tanks, hydrostatic pressure head measurement on a submersible probe, or non-contact ultrasonic time-of-flight for open tanks, converted to level and volume. Sensing element 316l submersible hydrostatic probe with a ceramic sensing diaphragm, or a 60 khz ultrasonic transducer with temperature-compensated time of flight. Alarm threshold two configurable level set points, default low-level alarm at 20% and high-level alarm at 95% of tank capacity. Accuracy class 0.5% fs hydrostatic and +/-0.25% of range ultrasonic, nist-traceable calibration certificate issued per unit. Response time level update every 1 s locally, radio report every 15 min nominal and within 5 s of any set-point breach. Power supply 3.6v er34615 lithium cell, 3-year service life at a 15 min report interval, or 24v dc loop power on the wired variant. Power consumption 30 ua standby, 120 ma peak transmit. Output signal 4g lte cat-1 uplink with mqtt plus rs485 modbus rtu, ultrasonic 0-10 m range for open tanks and reservoirs. Coverage area ultrasonic measuring range 0-10 m with a 0.5 m dead band, up to 48 meters per gateway. Alarm output local lcd level readout plus platform alert, sms and pump-room annunciator relay output. IP rating ip68 submersible probe, ip65 electronics housing. Operating temperature -10 deg c to +60 deg c process, -10 deg c to +55 deg c ambient electronics. Humidity range 10-95% rh non-condensing, probe rated for permanent immersion. Housing material 316l stainless-steel probe body with a polycarbonate v-0 electronics housing and a pur vented cable. Dimensions and weight probe 28 mm diameter x 132 mm length with a 10 m cable, 920 g net. Certifications CE / EN 61326 / RoHS / REACH / FCC / NIST-traceable calibration / 4G LTE Cat-1 carrier acceptance. The 2026 wireless fire alarm range is built on WANLIN-860 control panels to EN 54-2, EN 54-4 and EN 54-21 with a web console carrying 1,000 supervised devices and 50 concurrent users, WANLIN-868D LoRa gateways with Ethernet, Wi-Fi and 4G backhaul, WANLIN-307 and WANLIN-309 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 wireless call points to EN 54-11, WANLIN-656 mains-powered sounder strobes to EN 54-3 and EN 54-23, WANLIN-705 electrical fire monitors to GB 14287.2 and GB 14287.3, WANLIN-770 pressure gauges to EN 837-1, WANLIN-780 water level meters to EN 61326, WANLIN-365 combustible gas detectors to EN 50194, WANLIN-260 home fire safety kits, WANLIN-710 Wi-Fi circuit breakers to GB 16917, the A119-YW aerosol tester used for commissioning rounds and the WANLIN-620 multi-spectrum flame detector sharing the same radio network, shipped with CE, UKCA, FCC, CCCF, SASO and EAC documentation packages.
Executive summary - 12 buyer-relevant points:
- Flagship model WANLIN-780 Wireless Liquid Level Meter for Fire Water Tanks and Foam Tanks, hydrostatic pressure head measurement on a submersible probe, or non-contact ultrasonic time-of-flight for open tanks, converted to level and volume
- Sensing element 316l submersible hydrostatic probe with a ceramic sensing diaphragm, or a 60 khz ultrasonic transducer with temperature-compensated time of flight
- Alarm threshold two configurable level set points, default low-level alarm at 20% and high-level alarm at 95% of tank capacity
- Accuracy and response 0.5% fs hydrostatic and +/-0.25% of range ultrasonic, nist-traceable calibration certificate issued per unit / level update every 1 s locally, radio report every 15 min nominal and within 5 s of any set-point breach
- Power and consumption 3.6v er34615 lithium cell, 3-year service life at a 15 min report interval, or 24v dc loop power on the wired variant / 30 ua standby, 120 ma peak transmit
- Output signal 4g lte cat-1 uplink with mqtt plus rs485 modbus rtu, ultrasonic 0-10 m range for open tanks and reservoirs
- Coverage and notification ultrasonic measuring range 0-10 m with a 0.5 m dead band, up to 48 meters per gateway / local lcd level readout plus platform alert, sms and pump-room annunciator relay output
- 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 multi-spectrum flame detector on the same radio network
- MOQ 200 pcs, lead time 20-28 days, EXW / FOB Shenzhen / CFR / CIF / DDP supported, 24 months warranty
- Flagship field reference Village house cluster, Sai Kung, Hong Kong SAR: Nine three-storey village houses on separate titles sharing one lane and one transformer. .
- 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
- Contact: wanlinfirecontrol@163.com / +8613261677119 / www.wanlinfire.com
This article is written for B2B buyers in Shau Kei Wan, Hong Kong SAR who judge a wireless fire alarm system 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 burning test gallery, exporting wireless fire alarm panels, LoRa gateways, smoke and heat heads, call points and sounder strobes to 60+ countries across Europe, North America, the Middle East, Southeast Asia, Africa, Oceania and Latin America 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.
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 Shau Kei Wan, Hong Kong SAR is anchored on OFCA radio documentation, Fire Services Department advisory letter file, EN 54-7 and EN 54-5 type-test references and the battery autonomy calculation for the subdivision layout (Eastern District). Wireless gateways, battery call points, mains sounder units, smoke and heat detectors, control panels and mounting hardware shipped into Shau Kei Wan, Hong Kong SAR clear customs on one HS-coded packing list: the EN 54 type-test references, the CE and RoHS declarations, the radio band approval matched to the shipped serial prefix and the per-unit battery autonomy record travel with the pallet, so the insurer review and the local authority acceptance pass 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, ATEX directive 2014/34/EU and the IECEx scheme where hazardous areas are involved, ISO 7240 for system alignment, GB 4717, GB 20517, GB 19880, GB 26851 and GB 15631 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-780 Wireless Liquid Level Meter for Fire Water Tanks and Foam Tanks 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-780 Wireless Liquid Level Meter for Fire Water Tanks and Foam Tanks, part of the Wireless Liquid Level Meter - Hydrostatic and Ultrasonic (LoRaWAN / 4G / 433 MHz) family, configured as the 4g lte cat-1 ultrasonic build (2 variant). FOB Shenzhen reference price is $52.00 per piece at MOQ 200 pcs, with bulk tier pricing ranging $45.24-$57.72 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 24 months warranty.
The unique technical signature of WANLIN-780 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 | Hydrostatic pressure head measurement on a submersible probe, or non-contact ultrasonic time-of-flight for open tanks, converted to level and volume |
| sensing_element | 316L submersible hydrostatic probe with a ceramic sensing diaphragm, or a 60 kHz ultrasonic transducer with temperature-compensated time of flight |
| alarm_threshold | Two configurable level set points, default low-level alarm at 20% and high-level alarm at 95% of tank capacity |
| accuracy_class | 0.5% FS hydrostatic and +/-0.25% of range ultrasonic, NIST-traceable calibration certificate issued per unit |
| response_time | Level update every 1 s locally, radio report every 15 min nominal and within 5 s of any set-point breach |
| power_supply | 3.6V ER34615 lithium cell, 3-year service life at a 15 min report interval, or 24V DC loop power on the wired variant |
| power_consumption | 30 uA standby, 120 mA peak transmit |
| output_signal | 4G LTE Cat-1 uplink with MQTT plus RS485 Modbus RTU, ultrasonic 0-10 m range for open tanks and reservoirs |
| coverage_area | Ultrasonic measuring range 0-10 m with a 0.5 m dead band, up to 48 meters per gateway |
| alarm_output | Local LCD level readout plus platform alert, SMS and pump-room annunciator relay output |
| ip_rating | IP68 submersible probe, IP65 electronics housing |
| operating_temp | -10 deg C to +60 deg C process, -10 deg C to +55 deg C ambient electronics |
| humidity_range | 10-95% RH non-condensing, probe rated for permanent immersion |
| housing_material | 316L stainless-steel probe body with a polycarbonate V-0 electronics housing and a PUR vented cable |
| dimensions_weight | Probe 28 mm diameter x 132 mm length with a 10 m cable, 920 g net |
| certifications | CE / EN 61326 / RoHS / REACH / FCC / NIST-traceable calibration / 4G LTE Cat-1 carrier acceptance |
Wanlin wireless fire alarm systems are running in occupied buildings and live sites across six continents: four basement levels of a joint-venture tower in Kwai Chung, a moving hoarding line in Lusail, an occupied floor-by-floor refurbishment in Frankfurt, a listed Georgian hotel in Bath, a live data hall in Singapore, a ward extension in Manila, a mall with forty tenant changes a year in Jakarta, student dormitories in Riyadh, a six-building campus in Santiago, a granite-walled hotel in Lisbon, a student tower in Birmingham, a solvent store in Yokohama, a grain warehouse in Santos, a winter cross-dock in Almaty, a lint-heavy textile mill in Casablanca, a salt-exposed marina store in Auckland, a minus 28 deg C cold store in Helsinki, a mixed-voltage bus depot in Bogota, a three-level concrete car park in Warsaw, temporary spectator stands in Doha, a high-bay port warehouse in Rotterdam and railway arch workshops in Manchester. 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: Village house cluster, Sai Kung, Hong Kong SAR. Nine three-storey village houses on separate titles sharing one lane and one transformer. Each house carries a detector per floor, a call point by the stair and a sounder on the top landing; a single gateway on the middle house covers all nine because the lane is open on both sides. The owners run one console across the cluster and split the WhatsApp alert group between the two most resident families. The training handover ran 6 days on site for 175 WANLIN-780 units, covering cause-and-effect editing, decibel verification with a calibrated meter and the weekly backup routine now written into the Shau Kei Wan maintenance contract.
Scenario 2: Basement levels B2 to L0, new-build tower site, Kwai Chung, Hong Kong SAR. Four basement and lower-ground levels under construction, with hoarding and scaffold moving every fortnight. The site specification is four mains gateways per level, twelve battery call points, twelve battery smoke and heat detectors and ten mains alarm units with at least two hours of backup battery. Everything is IP67 because the levels are hosed down, and the whole lot was relocated twice without a single cable pull. Service records across 26 months show 188 WANLIN-780 units with 1 false-alarm investigations, all traced to steam escaping from a dishwasher room, and zero supervisory faults raised by the monitoring team.
Scenario 3: Joint site office, combined site area, Hong Kong SAR. A two-storey temporary site office with 40 desks, a print room and a tea point, standing for the length of the main contract. Detection went in on magnetic plates and lanyards so nothing was drilled into a structure that will be scrapped. When the office moved 200 m across the site, the devices went with it, were re-associated to a different gateway in under an hour and kept their device identities in the event log. The training handover ran 10 days on site for 201 WANLIN-780 units, covering cause-and-effect editing, decibel verification with a calibrated meter and the weekly backup routine now written into the Shau Kei Wan maintenance contract.
Scenario 4: Guest floors of an occupied hotel, Tsim Sha Tsui, Hong Kong SAR. Ninety rooms across six floors, refurbished two floors at a time with the rest selling. Detectors went into the rooms and corridor on battery units with a five-year sealed cell, call points beside each lift lobby and sounders in the corridor only, so a room alarm does not wake the whole floor. Night-work windows were four hours; a floor of twelve rooms was completed in two nights per floor. Service records across 34 months show 214 WANLIN-780 units with 3 false-alarm investigations, all traced to a blocked louvre in a plant room, and zero supervisory faults raised by the monitoring team.
Scenario 5: Ward extension above a live theatre suite, hospital estate, Hong Kong SAR. Infection-control rules banned drilling into the slab above the operating theatres. Detectors were bonded to the soffit with a removable plate, and the panel was placed in the ward office rather than the plant room. Test mode is run every morning at nine with the daily message to the maintenance group, so the clinical team gets positive proof the system is live without a single audible test in a ward. The training handover ran 5 days on site for 227 WANLIN-780 units, covering cause-and-effect editing, decibel verification with a calibrated meter and the weekly backup routine now written into the Shau Kei Wan maintenance contract.
The WANLIN-780 Wireless Liquid Level Meter for Fire Water Tanks and Foam Tanks 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-780 Wireless Liquid Level Meter for Fire Water Tanks and Foam Tanks carries the following certifications as standard scope: CE / EN 61326 / RoHS / REACH / FCC / NIST-traceable calibration / 4G LTE Cat-1 carrier acceptance. Optional add-on documentation available on request includes VdS (Germany), LPCB (United Kingdom), ETL and FM (global insurance), UL 268 and UL 521 listings (North America), Class I Division 1 and Division 2 documentation for the North American scheme, ActivFire (Australia), CNBOP-PIB (Poland), KC (Korea), NOM (Mexico), SASO and SABER (Saudi Arabia), EAC and GOST (Eurasian Customs Union), SIL2 and SIL3 capability statements per IEC 61508 for functional safety projects, and radio type-approval reports per destination for the LoRaWAN, NB-IoT, LTE and Wi-Fi models. 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 hazardous-area certificate such as ATEX, IECEx or the Class and Division scheme on the SKUs that carry it, 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 2000 pieces of WANLIN-780 Wireless Liquid Level Meter for Fire Water Tanks and Foam Tanks, the economics stack is:
| Cost Layer | USD per piece | USD for 2000 pcs |
|---|---|---|
| FOB Shenzhen factory price | $52.00 | $104,000.00 |
| + Sea freight FCL 40HQ (estimated) | $9.36 | $18,720.00 |
| CIF destination port | $61.36 | $122,720.00 |
| + Customs duty 3-10% (region dependent) | $3.64 | $7,280.00 |
| + Local delivery + warehousing | $19.50 | $39,000.00 |
| DDP landed cost | $84.50 | $169,000.00 |
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 24 months. Free DOA replacement within 60 days of receipt.
Below are 8 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: Wanlin ships 433 MHz, 868 MHz and 915 MHz SKUs plus LoRaWAN, NB-IoT and 4G LTE Cat-1 variants, and the band is matched to the destination market before the order is released rather than being a firmware option left to the installer. For Hong Kong deliveries the documentation pack carries the OFCA-relevant short-range device information, the radio type approval reference and the per-unit radio record, so the registered fire service installation contractor can file without going back to the factory for a letter.
Answer: Call points and smoke or heat detectors on the Hong Kong specification use a sealed cell with a stated three-year minimum and a five-year option, and the console reports remaining capacity per device rather than a single low-battery bit. Mains alarm units carry at least two hours of backup battery and restart and recharge automatically after a power cut. Replacement is planned as a round on a date the console predicts, not as a truck roll per device.
Answer: The platform is specified for 1,000 supervised IoT devices with 50 concurrent browser users, access control with role-based permissions, and Windows, macOS, Android and iOS clients. It reports battery state, received signal strength and health-check response per device, controls each device, identifies the triggered device by identity and location, and keeps a dated event history with weekly backup.
Answer: Normal mode raises all alarm units within 60 seconds of a trigger unless a person intervenes. Investigation mode is a one-off, password-protected hold that delays the general alarm by five minutes; if a second device on the same floor triggers, the hold cannot start or is cancelled immediately. Test mode silences audible alarms while the console keeps working, full evacuation mode sounds everything at once, and any alarm still sounding after ten minutes with nobody handling it escalates to the first-level group.
Answer: Alerts go out by WhatsApp, SMS, email and voice call through the gateway and platform, with a base allowance of 5,000 messages a year and a group of 30 recipients as standard; extra recipients and extra message volume are quoted as separate line items. Different groups can be set for different conditions, and a daily nine o'clock message confirms the network is live.
Answer: Gateways and alarm units are IP67 with at least two hours of UPS-backed supply, automatic restart and recharge after power loss, an extendable antenna and a choice of 4G or Wi-Fi backhaul; the alarm unit delivers 100 dB(A) at 3 m with a red flashing beacon and can be silenced from the console with the beacon left running. Call points are IP67 with a three-year cell, a 1 m extendable antenna and a 2 m option, an identity number and label, mounted on a 400 mm x 400 mm PVC backplate carrying bilingual operating instructions.
Answer: MOQ is typically 50 pieces per model on a mixed order, lead time 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 labelling are done at the factory, and certification support documentation is issued with the shipment rather than on request.
Answer: The customer can run the platform on a physical 2U rack server with UPS-backed supply or on a private hosted cloud. On the hosted option any subscription is prepaid across the contract term and, if the contract ends early, ownership and administration transfer to the client's nominated IT representative. Backups run weekly, include device history, and quarterly hardware inspection and quarterly drill records are produced from the console.
Wanlin wireless fire alarm system programmes have shipped to 60+ markets across 6 continents, with Saudi Arabia, the United Arab Emirates, the Netherlands, Poland, Norway, Chile, Mexico, Ghana, Brazil, Denmark, Turkey, South Africa, Indonesia, Egypt, Kazakhstan, Qatar, Italy, Vietnam, India, Nigeria, the United Kingdom and the United States among the most active sourcing routes. 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: Subdivided flat landlord portfolio, Yau Ma Tei and Mong Kok, Hong Kong SAR. The landlord held eleven subdivided units under a compliance notice and had been quoted a wired job needing eleven separate shutdowns. Wireless went in one unit at a time, each in under two hours, with the console showing each unit as its own zone. The measurable outcome was the notice cleared in five weeks rather than the four months the wired programme implied, and no tenant relocation at any point. Service records across 42 months show 240 WANLIN-780 units with 1 false-alarm investigations, all traced to aerosol use in a staff bathroom, and zero supervisory faults raised by the monitoring team.
Case 2: Village house cluster, Sai Kung, Hong Kong SAR. Nine separate titles could not agree on a shared wired system. The installed arrangement uses one gateway on the middle house for all nine, one detector per floor and one sounder per top landing, with the alert group split between two resident families. Signal audit at handover had every device above the threshold with margin, and the cluster has run two typhoon seasons with no radio fault logged. The training handover ran 9 days on site for 253 WANLIN-780 units, covering cause-and-effect editing, decibel verification with a calibrated meter and the weekly backup routine now written into the Shau Kei Wan maintenance contract.
Case 3: Hotel phased floor refurbishment, Tsim Sha Tsui, Hong Kong SAR. The earlier arrangement kept the old conventional panel on the unrefurbished floors and created a two-protocol building for eighteen months. The accepted plan ran wireless on refurbished floors with the panel bridging to the existing sounder circuits until the last floor was done. Rooms stayed on sale throughout; the measured outcome was 96 percent occupancy held through the programme against a budget of 88. Service records across 7 months show 266 WANLIN-780 units with 3 false-alarm investigations, all traced to steam escaping from a dishwasher room, and zero supervisory faults raised by the monitoring team.
Case 4: Hospital ward extension above live theatres, Hong Kong SAR. Drilling above an operating theatre was ruled out by infection control. Detectors were bonded to the soffit on removable plates and the panel placed in the ward office. What was measured afterwards was the daily nine o'clock test-mode message to the maintenance group: positive proof every morning that the network is live, with no audible test inside a ward for the entire first year. The training handover ran 4 days on site for 279 WANLIN-780 units, covering cause-and-effect editing, decibel verification with a calibrated meter and the weekly backup routine now written into the Shau Kei Wan maintenance contract.
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 flame test lamp guidance, integration assistance including Modbus register maps and MQTT topic structure for partners running their own servers, and one joint trade-show booth per year at Intersec Dubai, Security Essen, NFPA Conference, Firex International, Secutech, SICUR, FeuerTrutz, FireExpo or Canton 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: Hydrostatic pressure head measurement on a submersible probe, or non-contact ultrasonic time-of-flight for open tanks, converted to level and volume sensing_element: 316L submersible hydrostatic probe with a ceramic sensing diaphragm, or a 60 kHz ultrasonic transducer with temperature-compensated time of flight alarm_threshold: Two configurable level set points, default low-level alarm at 20% and high-level alarm at 95% of tank capacity accuracy_class: 0.5% FS hydrostatic and +/-0.25% of range ultrasonic, NIST-traceable calibration certificate issued per unit response_time: Level update every 1 s locally, radio report every 15 min nominal and within 5 s of any set-point breach power_supply: 3.6V ER34615 lithium cell, 3-year service life at a 15 min report interval, or 24V DC loop power on the wired variant power_consumption: 30 uA standby, 120 mA peak transmit output_signal: 4G LTE Cat-1 uplink with MQTT plus RS485 Modbus RTU, ultrasonic 0-10 m range for open tanks and reservoirs coverage_area: Ultrasonic measuring range 0-10 m with a 0.5 m dead band, up to 48 meters per gateway alarm_output: Local LCD level readout plus platform alert, SMS and pump-room annunciator relay output ip_rating: IP68 submersible probe, IP65 electronics housing operating_temp: -10 deg C to +60 deg C process, -10 deg C to +55 deg C ambient electronics humidity_range: 10-95% RH non-condensing, probe rated for permanent immersion housing_material: 316L stainless-steel probe body with a polycarbonate V-0 electronics housing and a PUR vented cable dimensions_weight: Probe 28 mm diameter x 132 mm length with a 10 m cable, 920 g net certifications: CE / EN 61326 / RoHS / REACH / FCC / NIST-traceable calibration / 4G LTE Cat-1 carrier acceptance