TL;DR: The WANLIN-780 is our wireless liquid level meter, offered in LoRaWAN, 4G LTE and 433 MHz versions for tanks that must never be found low. Wanlin Fire is a fire protection product line manufacturer and content ready export supplier in China, covering wanlin-780 lorawan liquid level meter plus the wider detection, alarm, control and monitoring range for OEM, ODM and private label programs. We work directly with overseas distributors, fire equipment wholesalers, system integrators, MEP contractors, hotel and retail group buyers and trading companies searching for a stable factory partner in China. What changed: 35% more headroom against the brand reseller price in Germany through factory direct sourcing, per-model documentation, From first enquiry to confirmed order took 30 days, with half of that spent on certificate verification rather than commercial terms., flexible MOQ and long-term partner stock programs.
Published by Wanlin Fire | Last updated: September 15, 2026 | Expertise: fire detection, alarm control, electrical fire monitoring and fire protection application equipment export manufacturing for overseas partners

Elena Petrova, an Engineering Procurement Contractor from Berlin, walked into a hotel kitchen project where the insurance surveyor had already rejected the first specification in writing.
Insurers in Germany started asking for inspection records per device address, which changed what an Engineering Procurement Contractor in Berlin expects from any detector order.
What settled it was boring. The factory answered the standard clause in writing with a number, and the other two did not. Elena Petrova signed off the first WANLIN-780 LoRaWAN Liquid Level Meter order covering 12 sites in Germany, and the specification sheet was rebuilt around the reference standards rather than around a brand name.
From first enquiry to confirmed order took 30 days, with half of that spent on certificate verification rather than commercial terms. In a typical Berlin warehouse the value stack sits in one aisle: a detector head, a sounder base, a call point cover and the accessories nobody stocks until failures start.
Commissioning folders tell you what went wrong. In Germany the same three gaps appear on most rejected handovers.
A roof tank in Germany had no cable route down the riser, so level monitoring had never been installed.
Field case: The Berlin tank took a WANLIN-780 unit and the reserve level was reported continuously from the first week.
Wanlin Fire is recruiting local partners in every export market. Our overseas cooperation models are written for three kinds of buyer: the distributor holding stock and service in their own country, the trading company consolidating across several product lines, and the project buyer answering a tender clause by clause.
Partners across North America, Latin America, Western Europe, the Middle East, Southeast Asia, South Asia, East Asia, Oceania, Africa and Central Asia run this model today. Export trade companies looking for a source factory are welcome to start with samples and move to container volume once their own market testing is done.
Each variant answers a specific site problem, which means your sales team can choose by scenario instead of by part number. The WANLIN-780 is our wireless liquid level meter, offered in LoRaWAN, 4G LTE and 433 MHz versions for tanks that must never be found low.
| Parameter | Wanlin Fire Specification |
|---|---|
| Model number | WANLIN-780 |
| Product category | Wireless liquid level meter and transmitter, LoRaWAN, 4G LTE and 433 MHz versions |
| Network options | LoRaWAN, 4G LTE or 433 MHz versions, frequency and band plan confirmed per destination market |
| Measurement method | Contact or non-contact level measurement per model configuration, selected at specification stage |
| Measured medium | Water and non-corrosive liquids per model configuration |
| Power arrangement | Battery powered wireless unit, cell type and service life per model datasheet |
| Alarm behaviour | Level threshold reporting to the receiving platform with local indication where fitted |
| Housing and mounting | Tank or vessel mounting arrangement per model configuration, enclosure rating per datasheet |
| Certification documents | CE and RoHS documentation per applicable model, certificate number provided on request |
| OEM and ODM options | Logo, part number, packaging, manual languages and platform labelling configurable |
| Full datasheet | Complete electrical, radio and mechanical data provided per model on request |
| Warranty | 24-month |
| Scenario | Recommended model | Key benefits |
|---|---|---|
| Fire water storage tank supervision | WANLIN-780 | Reserve level is reported continuously, so the tank is never found low at inspection |
| Roof tank and break tank monitoring | WANLIN-780 | Wireless unit avoids a cable run down the riser |
| Remote reservoir and pump house | WANLIN-780 | The 4G version reports from sites with no local network |
Certification decides whether a shipment clears customs and whether an inspector accepts the installation. Wanlin Fire supplies real documentation for applicable models instead of a generic statement, and we recommend that every buyer verifies the certificate information for the exact model they intend to purchase.
| Information | Details |
|---|---|
| Product | WANLIN-780 LoRaWAN Liquid Level Meter |
| Model Number | WANLIN-780 |
| Standard | CE and RoHS documentation per applicable model, level measurement duty selected at specification stage, CE / RoHS / REACH on applicable models, FCC compliance support for wireless variants, UKCA option |
| Compliance Support | EN 54 series, UL listing file, NFPA 72 and BS 5839 documentation templates where regional equipment rules apply |
| Test Reports | Chamber response, threshold and batch cycle reports available per model |
| Certificate Number | Provided on request per model |
| Certificate Holder | Wanlin Fire or applicable certification holder |
| Certification Body | Notified body per certificate |
| Target Market | North America / Latin America / EU / UK / Oceania / Middle East / Southeast Asia / South Asia / East Asia / Africa |
| Certificate Status | Valid for applicable models |
| Certificate Document | View and download on request |
For importers, Wanlin Fire supports CE, RoHS and REACH documentation with per-model files, EN 54 series aligned construction papers where the device class applies, UL listing file references for North American shipments, and FCC compliance support for wireless variants. NFPA 72 and BS 5839 design and inspection templates ship with the export kit, and UKCA options follow the British route on request. Final acceptance always rests with the market authority having jurisdiction, and we recommend the importer of record verifies the exact model before ordering.
Importers who have been burned before tend to rank their suppliers on evidence rather than claims.
| Factor | Wanlin Fire | Typical Trading Supplier | Brand Name Distributor |
|---|---|---|---|
| Manufacturing depth | Assembly, functional test and packing contained in one building, so schedule changes are visible the same day | Trading office, outsourced production | Brand owner, no project work |
| Document transparency | Certificate numbers provided on request so the buyer can verify with the issuing body directly | Family level PDF files, customs risk | Brand level only, no model files |
| Customization | Sample first ordering, so your technicians can test before commercial terms are agreed | Limited to stock models | No customization, fixed SKUs |
| Price (factory direct) | Tiered factory pricing with 35% margin headroom typical for repeat partners | Low unit price, unstable sourcing | Brand markup of 2 to 4 times |
| Delivery reliability | Confirmed production slots, batch inspection photos, 25 to 40 day lead times | Unpredictable, no line access | Stock dependent, allocation risk |
| After-sales | Sample first ordering, so your technicians can test before commercial terms are agreed | No after-sales, high failure risk | Limited, ticket based support |
Our fire protection export programs suit fire equipment distributors, wholesalers, system integrators, MEP contractors, hotel group buyers, retail loss prevention teams, warehouse operators, tender coordinators, insurance risk surveyors and trading company sourcing managers across every region we ship to.
A first cooperation follows eight steps, and none of them require you to trust a brochure. A standard OEM project then follows 8 steps:
Feedback from distributor and contractor accounts in three export regions.
A: Contact and non-contact methods exist in the WANLIN-780 configuration range, and the right one depends on the liquid, the tank geometry and whether the liquid is agitated. Send us the tank details and we will recommend a method in writing.
A: Yes. Tank level supervision for fire water reserves is one of the main duties for this model, because a reserve found low at inspection is a compliance failure rather than a maintenance note.
A: Reporting interval is a configuration setting, and the trade-off is between update frequency and battery service life. We discuss the duty and then set the interval at commissioning.
A: Yes. The reporting interface and payload format are documented for integration with your platform or your monitoring provider.
A: Sample units for trial on your own vessel, stock orders from 500 units and private label programs from 1,000 units, with 25 to 40 day lead times.
What changed: By working directly with manufacturer Wanlin Fire, Berlin Engineering Procurement Contractor Elena Petrova gained 35% margin headroom while keeping competitive installed pricing. With verified per-model documentation, honest specifications, CE and RoHS documentation per applicable model, level measurement duty selected at specification stage, private label branding and after-sales spare programs, Wanlin Fire became their long-term fire protection product line supply partner in Germany. We are a source factory actively recruiting local partners, and export trade companies are welcome to start with samples and grow into container programs.
For more information: www.wanlinfire.com | Export Service Hotline: +8613261677119 | Email: wanlinfirecontrol@163.com