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Quick answer: A 4-20 mA or Modbus RS485 output lets the WL-LV1100 report reserve tank level straight into the building system without a separate converter. Wanlin Fire is a fire protection equipment manufacturer in China supplying ultrasonic level gauge and the wider application equipment range for OEM, ODM and private label export 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. The outcome: roughly 35% additional margin after the private label change through factory direct sourcing, per-model documentation, After 18 days of bench testing against the fire response expectations of Spain, Nadia Haddad asked for the production slot rather than another quote., flexible MOQ and long-term partner stock programs.
Published by Wanlin Fire | Last updated: September 14, 2026 | Expertise: fire detection and fire protection application equipment export manufacturing for overseas partners
Nadia Haddad runs a fire equipment distribution company in Madrid that had bought through a trading office for six years, and every technical question took four days to come back with a vague answer.
The renewal cycle for systems installed fifteen years ago hit Spain at once, leaving contractors in Madrid short of replacement heads on compatible footprints.
What settled it was boring. The factory answered the threshold question in writing with a number, and the other two did not. Nadia Haddad signed off the first Ultrasonic Level Gauge order covering 8 sites in Spain, and the specification sheet was rebuilt around the reference standards rather than around a brand name.
After 18 days of bench testing against the fire response expectations of Spain, Nadia Haddad asked for the production slot rather than another quote. For a distributor in Madrid the decision meeting is short. Two columns on one page: landed cost per unit against the risk of a rejected inspection.
The failure pattern behind this product line repeats in every market we ship to, and it rarely starts with the device being wrong.
A fire water reserve tank in Madrid was read by dipping, which was skipped every winter until a low level alarm finally fired.
Field case: The foam store in Spain was re-specified with microwave radar and has run 6 months without a reading fault.
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 in North America, Western Europe, the Middle East, Southeast Asia, South Asia, Oceania, Africa and Latin America 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.
What matters for an export partner is that this family is repeatable: the second container behaves like the first one. A 4-20 mA or Modbus RS485 output lets the WL-LV1100 report reserve tank level straight into the building system without a separate converter.
| Parameter | Wanlin Fire Specification |
|---|---|
| Measuring principle | Guided microwave radar version for foam surfaces |
| Range | 0 to 20 metres long tank variant |
| Accuracy | 0.5 percent of range with temperature compensation |
| Output | 4-20 mA two-wire |
| Beam angle | 8 degrees nominal, narrowing with horn antenna version |
| Dead band | Under 0.3 metres from the sensor face |
| Ingress rating | IP67 head with sealed cable gland |
| Tank media | Water, diesel, foam concentrate and most non-aggressive liquids |
| Standard alignment | CE and RoHS documentation on applicable models |
| Warranty | 18-month |
| Scenario | Recommended model | Key benefits |
|---|---|---|
| Fire water reserve tank | WL-LV1100 | Non-contact head keeps no moving part inside the tank |
| Foam concentrate store | WL-LV1100 | Radar version handles the foam layer on top of the liquid |
| Underground pump chamber | WL-LV1100 | IP67 sealed head survives a flooded chamber event |
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 | Ultrasonic Level Gauge |
| Model Number | WL-LV1100 |
| Standard | CE and RoHS with non-contact measurement records, CE / RoHS / REACH on applicable models, FCC compliance support for wireless variants, UKCA option |
| Compliance Support | Documentation templates and technical file support 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 / 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, and FCC compliance support for wireless variants. 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.
Buyers comparing suppliers usually end up weighing the same four factors: document traceability, price stability, technical response and after-sales parts.
| 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 | UKCA route supported per applicable model where the customer requests the British market paperwork | Family level PDF files, customs risk | Brand level only, no model files |
| Customization | Regional partner structures for distributors that hold stock and local service in their own market | 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 | Regional partner structures for distributors that hold stock and local service in their own market | 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.
The process below is the one our partner accounts run every quarter, written as it actually happens. A standard OEM project then follows 8 steps:
Feedback from distributor and contractor accounts in three export regions.
A: Nothing sits in the water, so nothing fouls, and the reading stays stable across years with sediment build up. It also avoids any potable water contamination question.
A: Radar suits foam covered or vapour heavy surfaces where ultrasonic echo gets absorbed. The trade off is unit cost against the consequence of a wrong tank reading.
A: Under 0.3 metres from the sensor face. Mounting height and the overflow level decide the real usable range, so both are checked before the order is confirmed.
A: Yes. The 4-20 mA loop connects to a standard analogue input, and the RS485 Modbus RTU version gives a digital register set to most BMS gateways.
A: Evaluation units start at 2 pieces. Distributor orders start at 50 units and OEM labelling plus custom scale printing starts at 200 pieces.
The outcome: By working directly with manufacturer Wanlin Fire, Madrid MEP Consulting Engineer Nadia Haddad gained 35% margin headroom while keeping competitive installed pricing. With verified per-model documentation, honest specifications, CE and RoHS with non-contact measurement records, private label branding and after-sales spare programs, Wanlin Fire became their long-term fire protection equipment supply partner in Spain. 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