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The WANLIN-780 Wireless Liquid Level Meter for Fire Water Tanks and Foam Tanks ships with these headline parameters: 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 drawing 30 ua standby, 120 ma peak transmit, output 433 mhz fsk, lorawan 1.0.3 class a or 4g lte cat-1 uplink per sku, plus rs485 modbus rtu on the wired variant, coverage measuring range 0-5 m hydrostatic and 0-10 m ultrasonic, up to 48 meters per gateway, alarm output local lcd level readout plus platform alert, sms and pump-room annunciator relay output, ip68 submersible probe, ip65 electronics housing enclosure, -10 deg c to +60 deg c process, -10 deg c to +55 deg c ambient electronics operating range and probe 28 mm diameter x 132 mm length with a 10 m cable, 920 g net. As of September 21, 2026, Wanlin Group (Shenzhen, China) officially launches its 2026 proactive fire prevention 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, hospital and school estate teams, property and facility managers, insurers, contractors and regional distributors who source predictive fire risk hardware from a China-based source factory under the Wanlin brand. The new release targets importers, tender bidders, hospital and healthcare estate teams, school and university housing offices, municipal and utility operators, hotel groups, retail and logistics chains, industrial plant owners, system integrators, insurers and wholesale distributors who now buy the layer that works before ignition rather than the layer that starts an evacuation, and who source equipment directly from a Chinese manufacturer instead of paying the western brand premium of Honeywell, Siemens, Bosch, Apollo, Hochiki, Gent, Notifier or System Sensor. Wanlin Group as the proactive fire prevention 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 433 mhz fsk, lorawan 1.0.3 class a or 4g lte cat-1 uplink per sku, plus rs485 modbus rtu on the wired variant. Coverage area measuring range 0-5 m hydrostatic and 0-10 m ultrasonic, 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. The 2026 proactive range is built on WANLIN-RG880 risk engine edge controllers that normalise mixed fire panels, field buses and wireless fleets onto one Modbus TCP, MQTT, BACnet IP and REST model, WANLIN-INS450 NFC inspection terminals that turn a patrol round into a dated rectification record, WANLIN-AIR620 multi-parameter early hazard nodes reading smoke trend, carbon monoxide, temperature rise rate and humidity, WANLIN-303 standalone and WANLIN-307 and WANLIN-309 IoT smoke detectors on 433 MHz, LoRaWAN, NB-IoT, 4G LTE Cat-1 and Wi-Fi, WANLIN-340 rate-of-rise heat detectors in A1R, A2S, BR and CS classes to EN 54-5, WANLIN-222 resettable wireless call points to EN 54-11, WANLIN-656 sounder strobes to EN 54-3 and EN 54-23, WANLIN-860 wireless fire alarm panels to EN 54-2, EN 54-4 and EN 54-21, WANLIN-705 smart electrical fire monitors to GB 14287.2 and GB 14287.3, WANLIN-868D LoRa concentrator gateways with Modbus TCP, MQTT and BACnet IP, WANLIN-770 wireless pressure gauges to EN 837-1, WANLIN-780 wireless level meters to EN 61326, WANLIN-365 combustible gas detectors to EN 50194, WANLIN-260 home fire safety kits, WANLIN-710 Wi-Fi smart circuit breakers to GB 16917 and the A119-YW aerosol test gun and heat detector tester used for commissioning and periodic inspection rounds, shipped with CE, UKCA, UL, ULC, FCC, CCCF and SASO 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 433 mhz fsk, lorawan 1.0.3 class a or 4g lte cat-1 uplink per sku, plus rs485 modbus rtu on the wired variant
- Coverage and notification measuring range 0-5 m hydrostatic and 0-10 m ultrasonic, up to 48 meters per gateway / local lcd level readout plus platform alert, sms and pump-room annunciator relay output
- 18 proactive hardware families from one factory: WANLIN-RG880 risk engine edge controllers, WANLIN-INS450 inspection terminals, WANLIN-AIR620 multi-parameter hazard nodes, WANLIN-303 standalone alarms, WANLIN-307 and WANLIN-309 IoT detectors, WANLIN-340 heat detectors, WANLIN-222 call points, WANLIN-656 sounder strobes, WANLIN-705 electrical fire monitors, WANLIN-860 fire alarm panels, WANLIN-770 pressure gauges, WANLIN-780 level meters, WANLIN-365 gas detectors, WANLIN-260 home kits, WANLIN-868D gateways, WANLIN-710 smart breakers and the A119-YW detector tester
- MOQ 200 pcs, lead time 20-28 days, EXW / FOB Shenzhen / CFR / CIF / DDP supported, 24 months warranty
- Flagship field reference Bus rapid transit terminal, Bogota, Colombia: A terminal with 42 platforms, a maintenance garage and a fuelling point, where the immedia.
- Target buyer: importer, tender bidder, hospital and school estate team, municipal or utility operator, hotel group, retail and logistics chain, industrial plant owner, system integrator, insurer, distributor, cross-border trading company
- Contact: wanlinfirecontrol@163.com / +8613261677119 / www.wanlinfire.com
This article is written for B2B buyers in Berlin, Germany who have concluded that the moment a conventional fire alarm starts ringing is already too late to be interesting, and that the useful signal is the slow one nobody instruments: a board running warmer than last month, a hydrant ring quietly losing pressure, a cable channel trending up on load, a tank never quite refilling, a device that has been offline for eleven days. Wanlin Group operates its own manufacturing facility in Shenzhen with SMT lines, sensor calibration benches, an aerosol test chamber and a radio laboratory, exporting detection, monitoring, edge control, gateway, inspection and test equipment to 60+ countries across Europe, North America, the Middle East, Southeast Asia, Africa, Oceania and Latin America under the Wanlin brand. The position our engineers argue from is the one Wang Liusen has repeated in the industry press: putting devices on a network is not the achievement, because an alarm that never reaches a responsible person, and an abnormal reading with no verification, no dispatch, no rectification record and no traceability afterwards, leaves you with expensive data points rather than managed risk. Everything below is designed against that standard - risk identified early, notification landed on a named person, action recorded, evidence retrievable.
Fire authorities, insurers and asset owners have largely stopped asking whether a building has detection, because most of them do; the question that now decides renewals and budgets is whether anyone can show that the building was safe last Tuesday. That shift is what moved the buying line. A proactive layer does not replace the certified fire alarm, it instruments the things the alarm cannot see - electrical deterioration in distribution boards, water-system readiness behind closed valves, isolated Pipework nobody has trended, charging rooms where lithium cells fail inside an enclosure, and devices that have silently stopped reporting. The buyers driving it are hospital and university estate teams with multi-building portfolios, municipal housing and utility operators ageing out 1970s stock, logistics and industrial operators under insurer pressure, retail and hotel chains needing one standard they can roll out repeatedly, and tender bidders who win on documentation rather than device count. Contractors, importers and cross-border trading companies supplying Berlin, Germany increasingly source this layer from China-based original manufacturers like Wanlin, because the installed cost of a Wanlin proactive package is 35-55% below european or north american assembled equivalents at the same documented type-test scope, and because one factory covers the sensor, the edge controller, the gateway, the inspection terminal and the test tool on a single shipment with one set of declarations.
Market access in Berlin, Germany is anchored on CE marking plus VdS recognition where the insurer demands it, with the local Bauamt fire concept review. Connected detectors, hazard nodes, risk controllers, gateways, control panels and inspection tools shipped into Berlin, Germany clear customs on one HS-coded packing list: the radio type-approval reference, the CE and RoHS declarations, the EN 14604 or EN 54 type-test reference and the calibration 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 the applicable product standard, a radio type-approval reference for the wireless models 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 approval body reference of every device prior to import, since non-compliant or un-certificated detection devices may be rejected by customs authorities, refused by the insurer, or invalidate the building fire certification.
Reference: EN 54 series for fire detection and fire alarm systems, EN 54-2 and EN 54-4 control equipment, EN 54-21 remote transmission, EN 54-25 radio transmission, EN 54-29 multi-sensor devices, EN 14604 smoke alarm devices, EN 50194 and EN 50291 gas and CO detection practice, GB 14287.2 and GB 14287.3 electrical fire monitoring, ISO 7240, NFPA 72 and BS 5839 system design and maintenance practice, AS 1670, radio type-approval for the 433 MHz, LoRaWAN, NB-IoT, LTE and Wi-Fi models, plus local building, electrical and workplace safety requirements in the destination market, and Wanlin Group 2026 proactive fire prevention export programme documentation.
The WANLIN-780 Wireless Liquid Level Meter for Fire Water Tanks and Foam Tanks is engineered inside a four-layer proactive architecture rather than as an isolated device: (1) a sensing layer that reads the slowly changing physical signals preceding ignition - particulate trend rather than smoke density alone, carbon monoxide, temperature rise rate, residual current and cable temperature, water pressure and level - instead of waiting for a flaming fire; (2) an edge risk layer on the WANLIN-RG880 that normalises mixed vendor panels, field buses and radio fleets into one device and event model, then scores risk locally so the score survives a backhaul outage; (3) a transport layer choosing per building between 433 MHz with no recurring fee, LoRaWAN where hundreds of devices sit behind one gateway, NB-IoT or 4G LTE Cat-1 for dispersed single points, and Wi-Fi only where IT approves it, with Modbus TCP, BACnet IP, MQTT or REST into whatever the client already operates; and (4) a closed-loop layer where an alert becomes a task with an owner, a due date, photographic closure evidence and a dated record, because without that fourth layer the first three are a dashboard nobody trusts after six weeks. Because the package is specified as one design, thresholds, transport, evidence format and integration all 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 lorawan hydrostatic build (1 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, ISO 7240, UL or EN 837-1 product standard, the declaration of conformity scope, the system compatibility statement and the accuracy and response time requirement of the destination market.
| 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 | 433 MHz FSK, LoRaWAN 1.0.3 Class A or 4G LTE Cat-1 uplink per SKU, plus RS485 Modbus RTU on the wired variant |
| coverage_area | Measuring range 0-5 m hydrostatic and 0-10 m ultrasonic, 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 |
Wanlin proactive packages are instrumenting the layer before the alarm across six continents: a Rotterdam hospital estate, post-war blocks in Naples, informal supply points in Soweto, a boarding school outside Nairobi, student towers in Toronto, a Santiago metro depot, colocation halls in Frankfurt, a high-bay warehouse in Venlo, a six-hotel cluster in Lisbon, a retail and cinema complex in Kuala Lumpur, dementia wards near Manchester, a dyehouse in Lahore, a battery module line in Gyor, a cold store in Gdansk, a listed museum block in Edinburgh, a bus terminal in Bogota, a refinery tank farm outside Surabaya, flat blocks in Almaty, a container yard in Piraeus, a private hospital group in Manama, a discount chain in Birmingham, a technical campus in Tunis, an underground power station near Bilbao, a gold plant at Kumasi and a seafood terminal at Punta Arenas. Below are 5 detailed scenarios drawn from those deployments, each with a site, a device count, a transport and integration arrangement, an installation window and a measured or witnessed outcome rather than a capability claim.
Scenario 1: Bus rapid transit terminal, Bogota, Colombia. A terminal with 42 platforms, a maintenance garage and a fuelling point, where the immediate hazard sources are articulation joints, brake dust, tyre fires and a battery bank for the ticketing system, and where platform detection has to survive diesel exhaust and altitude. The installed scheme uses WANLIN-340 units at A2S class on each platform canopy because ambient swings from 4 deg C before dawn to 24 deg C by midday defeat any fixed temperature that is not rate-compensated, WANLIN-AIR620 nodes in the battery room and the tyre store, and WANLIN-770 gauges plus WANLIN-780 level meters on the hydrant ring because nobody had verified them since 2017. Everything lands on two WANLIN-RG880 controllers feeding the terminal operations centre. The first actionable result was mundane and worth more than a fire would have been: three hydrant valves shut and one isolation Valve leaking at a rate that would have left 9 minutes of water at design flow.
Scenario 2: Palm oil refinery and tank farm, Surabaya, Indonesia. Refinery units plus twelve storage tanks, where the insurance surveyor had raised storage readiness and the plant already knew six of twelve foam system valves were stuck. No combustible environment without certification is acceptable here, so the deployed devices were the ATEX-listed WANLIN-365 gas detectors in 316L stainless housings on the two loading manifolds and the boiler fuel line, plus WANLIN-770 pressure gauges and WANLIN-780 level meters in their intrinsically safe variants on the tank farm and the foam concentrate store. All of it reports through WANLIN-868D gateways in IP65 enclosures and one WANLIN-RG880 in the control room, with the plant DCS receiving data over Modbus RTU rather than through any cloud. The refinery insisted on DCS integration over any web portal, which is not the arrangement most vendors will offer, and it took three weeks of engineering on our side to map against their register.
Scenario 3: Mental health wards, Greater Manchester, United Kingdom. Four wards where ligature-resistant design governs every specification and where any new device becomes a potential ligature point if it is surface mounted with a visible edge. The trust therefore required flush-with-ceiling installation and no removable parts accessible without a tool. WANLIN-309 detectors went in on flush plates with tamper-release bases needing a specific tool, WANLIN-AIR620 nodes were placed only in the two designated outdoor shelters where the ligature review had already been passed, and no sounder or strobe was installed inside any bedroom at all; ward notification happens at the nurse station through the existing staff attack system instead. All devices run to one WANLIN-RG880 and a data-sharing agreement was signed with the trust information governance team before commissioning, not after.
Scenario 4: Soviet-era residential blocks, Almaty, Kazakhstan. Thirty-one nine-storey blocks from the 1970s with shared electrical risers, winter design temperatures below -30 deg C, and resident-owned electrical modifications in most apartments. Rather than entering 1,400 apartments, the city housing company instrumented the shared risk: two WANLIN-705 monitors per riser across 62 risers reading residual current and cable temperature, WANLIN-303 standalone units in every lift lobby and corridor on 433 MHz interconnect, and one WANLIN-868D gateway per block on 4G because there is no usable IP network in the blocks. Winter was the actual test: the wide-temp SKUs were specified at -30 deg C, and four of the 62 risers showed temperature highs in February that led to load rebalancing rather than a fire call. The housing company now buys in batches of three blocks per quarter because the first two showed no winter failures.
Scenario 5: Container terminal yard, Piraeus, Greece. A terminal handling both standard and reefer containers, with a straddle carrier fleet, a reefer plug area of 640 points, and a tyre store that every fire officer asks about first. Salt-laden air was the specification driver: every deployed device is either 316L stainless or polycarbonate with stainless hardware. WANLIN-770 gauges cover the hydrant ring and monitor points, WANLIN-780 level meters the two reserve tanks, WANLIN-710 breakers the reefer plug boards - because leakage on a 640-point reefer field is the commonest real fault - and WANLIN-AIR620 nodes the tyre store and the two generator enclosures. Two WANLIN-RG880 controllers in IP65 steel enclosures aggregate everything to the terminal operating system over Modbus TCP. Grounding rather than detection turned out to be the value: 31 of the 640 reefer points showed leakage above 20 mA before any of them tripped.
The WANLIN-780 Wireless Liquid Level Meter for Fire Water Tanks and Foam Tanks and the wider Wanlin proactive prevention package deliver 10 distinct advantages for cross-border B2B buyers who source predictive fire safety hardware directly from a Chinese manufacturer:
Combined, these advantages allow Wanlin partners to win hospital estate programmes, school and university framework contracts, municipal retrofit tenders, industrial and logistics insurer remediation, hotel and retail rollouts, water-system readiness projects, public procurement bids and national distributor frameworks, secure regional distribution rights and serve end customers under their own brand at 35-55% 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. Optional add-on documentation available on request includes VdS (Germany), LPCB (United Kingdom), ETL and FM (global insurance), UL and ULC (North America), ActivFire (Australia), CNBOP-PIB (Poland), TZUS (Czech), ATEX and IECEx for hazardous-area devices, KC (Korea), NOM (Mexico), SASO and SABER (Saudi Arabia), and radio type-approval reports per destination for the 433 MHz, 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 proactive equipment sits across four compliance legs: the applicable device standard such as EN 54-29, EN 54-5, EN 54-2 or EN 14604, the radio type-approval for wireless models in the destination band plan, the system design and maintenance rule such as NFPA 72, BS 5839 or AS 1670 where the device is documented as part of a building system, and the destination conformity route plus environmental declarations. Wanlin supplies a pre-validated compliance pack per model covering DoC templates, type-test references, radio approvals, calibration records and the annual survey template, 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 proactive fire prevention 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: A conventional system is built to detect a fire and start an evacuation, which is necessary and insufficient. A proactive scheme adds the layer before that: it treats slowly changing conditions as the signal of interest rather than noise, so rising residual current on a board, a cable temperature trend, a hydrant pressure drifting below readiness, a valve left part-closed, or a smoke chamber value creeping up over an hour all become visible before anything ignites. Wang Liusen, an engineer who has spent years on smart fire technology development and application, puts the boundary this way: the objective is not simply connecting devices to a network, it is making sure an identified risk reaches a named person, is checked, is acted on, and can be traced afterwards. In practice that means adding the monitoring dimensions a normal panel ignores, and closing the loop with inspection and rectification records rather than stopping at the alarm.
Answer: Yes, and this is the single most common starting point. Existing heads stay in place and are treated as data sources. Practically that means one of three routes: reading the serial output offered by the panel or printer output where the vendor publishes it, taking dry contacts for fire and fault states where it does not, or leaving the panel entirely alone and adding WANLIN-309 or WANLIN-340 wireless devices alongside it. The WANLIN-RG880 edge controller normalises whatever comes out of those routes into one Modbus TCP, BACnet IP, MQTT or REST model so downstream you see one consistent device and event list. Our engineers normally ask for the panel model and its protocol manual before quoting, because that answer determines whether integration takes days or weeks.
Answer: Three mechanisms, all implemented rather than promised. First, multi-channel devices read trend rather than threshold by default - a slow change raises a pre-alarm and only a sustained breach raises a fire alarm. Second, the entire fleet is supervised: heartbeat, tamper, low battery and chamber health states are themselves monitored, so an offline device becomes an open item rather than a silent gap; shipments carry per-unit battery and end-of-life dates in the asset register so replacement is planned. Third, thresholds can be tuned remotely and each adjustment is logged, which means the sensitivity argument is settled with a data series instead of opinions. Nielsen-type tuning on the first month of real data is standard on every project we support directly.
Answer: This is where most platform projects quietly fail, so we treat it as a product rather than a feature. The INS450 inspection terminal reads an NFC tag or QR plate at the asset, runs the checklist, and any failed line raises a rectification task with an owner, a due date and photographic evidence. The task cannot be closed without that evidence, unresolved ones escalate automatically, and the RG880 controller keeps the same event timeline so alarm, task and closure sit in one record. For tender and insurance purposes the export is a dated pass-or-fail history per asset, which is exactly what a monthly compliance file is supposed to contain and what paper rounds rarely deliver convincingly.
Answer: Architecture assumes loss rather than hoping to avoid it. Detectors keep working locally with their integral sounders regardless of any network. The RG880 controller holds its most recent risk scores and a 30-day event buffer locally, so production continues during backhaul loss and buffered events flush automatically on restoration. Devices themselves buffer alarm traffic ahead of routine telemetry. Where national regulations or company policy require it, everything can run entirely on-premise - several partners run the MQTT interface into their own servers with no Wanlin cloud account at all, and we supply the topic structure and payload documentation to their engineers rather than making our portal a condition of supply.
Answer: The choice is made per building rather than once per project. 433 MHz suits sites with no IT support and no tolerance for recurring fees, with no SIM and typically 60-120 m of indoor range per hop. LoRaWAN suits campuses and plants with the need for hundreds of devices per gateway, especially where plant telemetry already exists. NB-IoT and 4G LTE Cat-1 suit dispersed single points with only cellular coverage; NB-IoT has the lowest power draw, Cat-1 the widest roaming. Wi-Fi is used only where the client IT department approves it in writing. We will tell you plainly that the recurring cost question, not the radio specification, decides most of these choices, and we will quote each option with its lifetime connectivity cost before you commit.
Answer: Each model ships with its declaration of conformity and type-test references in scope: EN 14604 for smoke alarms, EN 54 parts for heat detectors, call points, sounder-strobe devices, control equipment and remote transmission, EN 50194 and EN 50291 for gas and CO practice, GB and CCCF references for China schemes, plus radio type-approval for the 433 MHz, LoRaWAN, NB-IoT, LTE and Wi-Fi variants. Factory scope is ISO 9001 and ISO 14001 with RoHS and REACH declarations per batch; UL, UKCA, SASO/SABER, EAC, KC and other destination-specific documentation is prepared per destination. What stays local is installation licensing, authority acceptance and civil work - Wanlin does not contract abroad and does not present itself as a licensed installer in your country, and we will say so rather than leave the impression otherwise.
Answer: MOQ ranges from 20 pieces on panels and controllers to 1,000 pieces on high-volume standalone alarms, with mixed-SKU containers accepted on a first order. Standard lead time is 15-35 days depending on model and certification scope. Samples ship in 3-7 days by express for stock SKUs and 7-15 days for special configurations; sample cost is refundable against the first bulk order above MOQ. Standard terms are 30 percent T/T deposit with the balance against bill of lading copy; L/C at sight is accepted above USD 80,000. Three partnership tiers exist - Authorized Reseller, Regional Distributor and Strategic OEM - and each has documented annual volume, discount, exclusivity and joint marketing terms rather than negotiated case by case.
Wanlin proactive prevention packages have shipped to 60+ markets across 6 continents, with the United Arab Emirates, Saudi Arabia, Indonesia, Ghana, the Netherlands, Peru, Bulgaria, Morocco, Vietnam, Poland, Mexico, Bahrain, Sri Lanka, Serbia, Uganda, Tunisia, Uzbekistan, Ecuador, Rwanda, Kazakhstan and India 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: Bulgarian integrator uses our gateway rather than replacing three existing fire heads. A Sofia integrator had inherited three different fire panels across one industrial site and no appetite to rip any of them out. They took one WANLIN-RG880 to normalise the three into one Modbus register map plus their own SCADA objects, bought no detectors at first, and came back six months later for WANLIN-705 and WANLIN-770 units once the customer saw the water system data. We made no attempt to sell them a full replacement, which is why they called back.
Case 2: Moroccan hotel group standardised across four properties after one bad experience. A Casablanca group had bought European equipment once, and after 14 months a single failed radio module cost them more to replace than the original nine devices. Their second attempt used WANLIN-860 panels with dual-path transmission and LoRaWAN devices that they can buy individually from stock rather than as a proprietary module set. Four properties, 460 keys, all now on one dashboard. Their engineering note to us afterwards was explicit: they wanted a supply chain, not a system, and they now hold spares themselves.
Case 3: Vietnamese contractor retrofitted 40 buildings without laying a single new cable. A Ho Chi Minh City contractor doing government office retrofits was repeatedly refused permission to drill. They moved to 433 MHz and LoRaWAN device sets with adhesive mounting plates where drilling was refused, completed the first building in eleven days with three workers, and have since done 40 buildings. The reference value is procedural: their customers accept cabling exemption when no new fire riser is created, which we documented rather than argued.
Case 4: Polish insurer-driven remediation on six logistics parks. A Warsaw loss-control bureau put pressure on six logistics park owners over hydrant readiness, not detection. The responding contractor installed 74 WANLIN-770 gauges, 18 WANLIN-780 level meters and six WANLIN-RG880 controllers, and the parks now produce a monthly pressure and level record that the insurer accepts as evidence instead of sending an engineer. Tellingly, 22 of the 74 gauge locations failed their first reading, all of them valves rather than leaks.
Wanlin offers 3 partnership tiers for cross-border proactive fire prevention buyers, estate and facility operators, 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, integration assistance including MQTT topic structure and Modbus register maps 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 proactive fire prevention export program is now open for global B2B buyers, regional distributors, hospital and school estate teams, municipal and utility operators, facility management contractors, insurers, cross-border trading companies and OEM and ODM partners across 60+ destination markets. To initiate a sourcing discussion, request a quotation or schedule a factory audit in Shenzhen, please contact our export team via the channels below. Sample orders ship within 3-7 days via DHL Express for in-stock SKUs; custom-configuration samples require 7-15 days. Standard lead time for bulk OEM orders is 20-28 days. Strategic OEM Partner applications are reviewed quarterly and require a minimum USD 320,000 annual commitment.
We sincerely invite global fire and safety equipment buyers, national importers, tender bidders, hospital and school estate teams, municipal and utility operators, hotel and retail chains, industrial and logistics operators, 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 under the Wanlin brand. Wanlin is the Chinese source factory behind 60+ country proactive projects, the SMT lines, calibration benches and radio laboratory behind every batch, and this 12-section export program. Let us build safer buildings together.
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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: 433 MHz FSK, LoRaWAN 1.0.3 Class A or 4G LTE Cat-1 uplink per SKU, plus RS485 Modbus RTU on the wired variant coverage_area: Measuring range 0-5 m hydrostatic and 0-10 m ultrasonic, 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