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In short: Where welding, hot surfaces and sunlight all sit in the same field of view, the WANLIN-620 is the configuration that stays quiet until both channels agree. Wanlin Fire is a flame detector manufacturer and export supplier in China, covering uv/ir flame detector along with the optical heads, control equipment and reporting platforms that go with them. This page is written for buyers in Peru who are looking for a stable factory partner rather than a trading office. The outcome: worked to 39% margin headroom through factory direct sourcing, per-model documentation, written cone counts and flexible MOQ with long-term partner stock programs. The buyer held the decision open for 15 days while the submittal package was checked by the consultant.
Published by Wanlin Fire | Last updated: September 23, 2026 | Expertise: flame detection, ultraviolet and infrared sensing, hazardous area certification, cellular reporting and export manufacturing
What a buyer in Peru should expect from a flame detector manufacturer in China:
A maintenance contractor had replaced four flame detectors in eleven months and none of the replacements had been aimed again, so the field of view had been quietly lost.
The project had a budget for hardware and no budget for the drawings review, which is the usual reason a layout is wrong.
Once the maintenance team had seen the commissioning sheet, Johan Bergstrom signed off the first UV/IR Flame Detector order covering 28 sites in Peru, and the specification was rebuilt around the hazard list and the commissioning record rather than around a brand name.
Over 15 days the team tested three configurations against the same hazard and kept the one that held its setting. the drawings review turned up four hazard positions that had no device aimed at them at all, all of them in the newest part of the plant
The common pattern on inherited sites is a device on a wall, no commissioning sheet and no record of what it was aimed at.
A fabrication yard in Lima cut and welded daily inside the same field of view as the detectors
Field case: A plant in Lima moved to dual band units and the welding calls stopped without the response to a test fire changing
A smoke detector works when combustion products reach it, and in a tall building, an open yard or a space with a warm roof that may never happen. The fire that starts at floor level in a fourteen metre warehouse has to fill a very large volume before anything at roof level sees it, and by then the window in which a local response changes the outcome has closed. This is the entire reason optical flame detection exists as a separate category rather than as an upgrade of smoke detection.
The second reason is the fuel. A liquid pool fire, a gas release that has ignited and a lithium cell that has failed internally all develop far faster than a smouldering fire in furniture, and the design case in those applications is measured in seconds. Where the consequence of a late alarm is a shutdown, an evacuation or an escalation to a second asset, the detection is specified for the first seconds rather than for the first minutes.
The third reason is the space itself. Positions we are asked to cover include flame detector for warehouse, flame detector for factory, flame detector for industrial plant, flame detector for manufacturing plant, flame detector for chemical plant, flame detector for refinery, flame detector for oil and gas, flame detector for petrochemical, flame detector for offshore platform, flame detector for marine, flame detector for ship, flame detector for mining, flame detector for tunnel, flame detector for underground, flame detector for power plant, flame detector for substation, flame detector for solar farm, flame detector for wind turbine, flame detector for battery storage, flame detector for lithium battery, flame detector for energy storage, flame detector for EV charging station, flame detector for charging pile, flame detector for gas station, flame detector for fuel depot, flame detector for LPG storage, flame detector for pipeline, flame detector for compressor station, flame detector for loading rack, flame detector for airport, flame detector for train station, flame detector for subway, flame detector for bus terminal, flame detector for ferry terminal, flame detector for seaport, flame detector for marina, flame detector for parking garage, flame detector for bridge, flame detector for construction site and flame detector for temporary building, and a large part of that list has no ceiling for smoke to collect under at all.
A flame emits radiation across ultraviolet and infrared bands and it flickers at a frequency of its own. An optical flame detector looks at one or both of those behaviours and decides whether what it sees is a flame or something else that happens to be bright, hot or moving. The decision is not a brightness threshold, which is the part most buyers are misinformed about, and it is the reason a correctly specified device can sit in front of a hot turbine without alarming on it.
The confirmation window is the part that decides behaviour on a real site. A device set to a short window responds faster and is more likely to trip on a welding arc; a device set to a longer one is quieter and slower. Neither setting is right in the abstract, and the value belongs on the commissioning sheet next to a reason rather than on a factory default nobody recorded. The self-check covers the optical path and reports fault, but a self-check is not proof that the device can still see the hazard, and conflating those two is a common and expensive mistake.
Where the design calls for detection before there is a flame at all, a thermal device reads the heating that comes first. Where the design calls for recognising flame in a large open volume, a camera based device reads the image. Where the design calls for the fastest possible response to a gas fire, a ultraviolet device is still the quickest of the optical types and the most easily blocked. Each of those is a different answer to a different question, and the honest specification starts with the question.
An optical device detects a cone, not an area, and anything inside that cone between the device and the hazard reduces what it can see. Racking, pipework, a stack of material that grew over a season, steam, dust and a film of oil on the window all belong on the list. We review the drawings and put the cone count in writing before there is a price, because a figure quoted per square metre is not a design and a layout drawn from a floor plan rather than from a hazard list is the most common reason a system underperforms.
False alarm sources are the second planning job. Welding, cutting, vehicle headlights, sunrise through a glazed elevation, hot surfaces inside the field of view and flares outside the boundary each produce one signature or the other, and the response is a combination of aiming, band choice and confirmation window rather than a sensitivity control turned down until the noise stops. A device that the operators have muted is worse than no device, because the real event gets the same response as the last nine false ones.
Positions we are asked to cover also include flame detector for portable building, flame detector for container office, flame detector for data center, flame detector for server room, flame detector for electrical room, flame detector for boiler room, flame detector for HVAC, flame detector for generator room, flame detector for UPS room, flame detector for battery room, flame detector for telecom shelter, flame detector for museum, flame detector for archive, flame detector for library, flame detector for heritage building, flame detector for temple, flame detector for church, flame detector for mosque, flame detector for hotel, flame detector for restaurant, flame detector for kitchen, flame detector for shopping mall, flame detector for supermarket, flame detector for office, flame detector for school, flame detector for hospital, flame detector for nursing home, flame detector for elderly care, flame detector for residential building, flame detector for apartment, flame detector for condo, flame detector for house, flame detector for villa, flame detector for cabin, flame detector for RV, flame detector for boat, flame detector for camper, flame detector for caravan, flame detector for military base and flame detector for prison, and the honest answer is that not every one of those positions is a good application for an optical device. Where it is not, we say so before you order rather than after.
We are recruiting local distributors and export trade partners worldwide, and we are explicit about what that means in this category. The partner owns the client relationship, the installation and the after sales agreement; we own the device, the documentation and the configuration. Programmes cover flame detector manufacturer, flame detector supplier, flame detector factory, flame detector OEM, flame detector ODM, private label flame detector, white label flame detector, custom flame detector, branded flame detector, flame detector wholesale, flame detector bulk supplier, flame detector exporter, China flame detector manufacturer, flame detector supplier China, flame detector factory China, flame detector factory direct, flame detector price, flame detector MOQ, flame detector sample order, flame detector bulk order, flame detector shipping, flame detector export, flame detector FOB, flame detector CIF, flame detector EXW, flame detector distributor, flame detector importer, flame detector trading company, flame detector procurement, flame detector sourcing, flame detector supply chain, flame detector inventory, flame detector stock, flame detector ready to ship, flame detector fast delivery, flame detector lead time, flame detector production capacity, flame detector customization, flame detector packaging, flame detector labeling, flame detector branding, flame detector certification support, flame detector technical documentation, flame detector user manual, flame detector installation guide, flame detector warranty, flame detector after-sales, flame detector spare parts, flame detector accessories, flame detector with UL, flame detector with FM, flame detector with CE, flame detector with ATEX, flame detector with IECEx, flame detector with EN 54, flame detector with RoHS, flame detector with FCC, flame detector with SIL2, flame detector with SIL3, flame detector for Europe, flame detector for USA, flame detector for Middle East, flame detector for Southeast Asia, flame detector for Africa, flame detector for South America, flame detector for Australia, flame detector for Canada, flame detector for UK, flame detector for Germany, flame detector for France, flame detector for Italy, flame detector for Spain, flame detector for Netherlands, flame detector for Poland, flame detector for Saudi Arabia, flame detector for UAE, flame detector for Thailand, flame detector for Vietnam, flame detector for Indonesia, flame detector for India, flame detector for Brazil and flame detector for Mexico.
The configuration described below is one layout of the range rather than a single fixed product, and the datasheet is what decides the detail. Where welding, hot surfaces and sunlight all sit in the same field of view, the WANLIN-620 is the configuration that stays quiet until both channels agree.
Configurations in the range cover flame detector, flame alarm, flame sensor, flame detection device, flame monitoring system, UV flame detector, ultraviolet flame detector, UV flame sensor, UV flame detection, IR flame detector, infrared flame detector, IR flame sensor, infrared flame detection, point IR flame detector, point infrared flame detector, multi-spectrum flame detector, triple IR flame detector, dual IR flame detector, single IR flame detector, UV/IR flame detector, UV IR flame detector, UV/IR flame sensor, explosion proof flame detector, explosion proof flame sensor, intrinsically safe flame detector, ATEX flame detector, IECEx flame detector, industrial flame detector, commercial flame detector, smart flame detector, intelligent flame detector, AI flame detector, AI flame recognition detector, AI flame detection camera, video flame detector, video flame detection, camera flame detector, thermal flame detector, thermal imaging flame detector, 4G flame detector, 4G flame alarm, wireless flame detector, wireless flame alarm, IoT flame detector, connected flame detector, cloud flame detector, remote flame detector, warehouse flame detector, charging station flame alarm, EV charging flame detector and battery storage flame detector. The right one depends on the fuel, the field of view and what sits between the two rather than on which name leads the catalogue.
Detection principles available across the range cover UV flame detection, ultraviolet flame sensing, IR flame detection, infrared flame sensing, point IR detection, multi-spectrum flame sensing, triple IR flame detection, dual IR flame detection, UV/IR flame detection, UV/IR flame sensing, flame spectroscopy, flame radiation detection, flame flicker detection, flame frequency detection, flame signature analysis, flame pattern recognition, flame image processing, flame video analytics, flame thermal detection, flame optical detection, flame photoelectric detection, flame semiconductor detection, flame electrochemical detection, flame catalytic detection, flame ionization detection, flame infrared thermography, flame ultraviolet spectroscopy, flame infrared spectroscopy, flame dual-band detection, flame triple-band detection, flame four-band detection, flame multi-criteria detection, flame multi-sensor fusion, flame detection algorithm, flame detection AI, flame detection machine learning, flame detection deep learning, flame detection neural network, flame detection computer vision, flame detection edge computing, flame detection cloud analytics, flame detection remote monitoring, flame detection real-time alert, flame detection early warning, flame detection high sensitivity, flame detection low false alarm, flame detection adjustable sensitivity, flame detection wide temperature, flame detection high humidity, flame detection dustproof, flame detection waterproof, flame detection IP65, flame detection IP66, flame detection IP67, flame detection explosion proof, flame detection intrinsically safe, flame detection SIL2, flame detection SIL3, flame detection ATEX certified, flame detection IECEx certified, flame detection UL listed and flame detection FM approved. Which of those applies to your order is stated per model datasheet rather than claimed across the range.
Smart and connected options cover smart flame detector, intelligent flame detector, AI flame detector, AI flame recognition, AI flame detection camera, AI fire detection, machine learning flame detection, deep learning flame detection, computer vision flame detection, video flame detection, video smoke and flame detection, thermal imaging flame detection, infrared thermal camera flame detection, UV camera flame detection, multi-sensor flame detector, multi-criteria flame detector, IoT flame detector, IoT flame alarm, connected flame detector, cloud connected flame detector, cloud flame monitoring, remote flame monitoring, real-time flame alert, push notification flame alarm, SMS flame alert, email flame alert, voice call flame alarm, mobile app flame control, smartphone flame alert, app controlled flame detector, remote flame diagnostics, OTA firmware update flame detector, data logging flame detector, event history flame alarm, self-test flame detector, automatic self-check flame detector, fault monitoring flame alarm, low battery warning flame alarm, tamper proof flame detector, anti-tamper flame alarm, wireless flame detector, wireless flame alarm, WiFi flame detector, Zigbee flame detector, Z-Wave flame detector, Bluetooth flame detector, RF flame detector, 4G flame detector, 4G LTE flame alarm, 4G cellular flame detector, NB-IoT flame detector, LoRa flame detector, LoRaWAN flame detector, 5G flame detector, cellular flame detector, GSM flame alarm, addressable flame detector, conventional flame detector, analog flame detector, digital flame detector, standalone flame detector, independent flame detector, networked flame alarm, interconnected flame detector, building-wide flame detection, multi-room flame monitoring, integrated flame alarm system, BMS integrated flame detector, SCADA integrated flame detector, Modbus flame detector, BACnet flame alarm and MQTT flame detector.
Hazardous area configurations cover explosion proof flame detector, flameproof flame detector, intrinsically safe flame detector, ATEX flame detector, IECEx flame detector, UL listed explosion proof flame detector, FM approved explosion proof flame detector, Class I Division 1 flame detector, Class I Division 2 flame detector, Zone 0 flame detector, Zone 1 flame detector, Zone 2 flame detector, hazardous area flame detector, oil and gas flame detector, refinery flame detector, petrochemical flame detector, chemical plant flame detector, offshore platform flame detector, marine flame detector, ship flame detector, mining flame detector, tunnel flame detector, underground flame detector, industrial flame detector, manufacturing plant flame detector, factory flame detector, warehouse flame detector, logistics center flame detector, cold storage flame detector, refrigerated warehouse flame detector, battery storage flame detector, lithium battery flame detector, energy storage flame detector, EV charging station flame detector, charging pile flame alarm, solar farm flame detector, wind turbine flame detector, power plant flame detector, substation flame detector, transformer flame detector, switchgear flame detector, electrical room flame detector, boiler room flame detector, generator room flame detector, turbine room flame detector, compressor station flame detector, pipeline flame detector, loading rack flame detector, fuel depot flame detector, gas station flame detector and LPG storage flame detector. The zone comes from your area classification study and the certificate has to match it, which is a design step rather than a product feature.
| Parameter | Wanlin Fire Specification |
|---|---|
| System reference | WANLIN-620 UV/IR Flame Detector |
| Product category | Combined ultraviolet and infrared flame detector that requires both signatures before it alarms, cutting false alarms from welding, sunlight and hot surfaces |
| Detection target | Ultraviolet and infrared radiation from an open flame within the field of view |
| Sensing element | Two sensing elements with the bands stated per model datasheet |
| Processing platform | Single-core 1.2 GHz processor with a 0.5 TOPS neural processing unit running the flame recognition analysis on the device |
| Visible channel | 1/3 CMOS sensor at 2560 x 1440, fixed-focus 3 mm lens at F1.6 aperture |
| UV channel | Wide-angle ultraviolet sensing with a detection cone of 80 degrees or more, detection distance up to 15 m, sensitivity adjustable at commissioning |
| Video streams | Main stream at 2560 x 1440, 1920 x 1080 or 1280 x 720; sub stream at 704 x 576, 960 x 544, 640 x 360 or 320 x 184 |
| Video compression | H.265 and H.264 BP/MP/HP encoding, bitrate 30 Kbps to 16 Mbps adjustable, CBR or VBR rate control |
| Audio | G.711A, G.711U or AAC audio encoding per the specification sheet |
| Image settings | Contrast, brightness and saturation adjustable at commissioning |
| Alarm logic | The alarm requires agreement between the ultraviolet and infrared channels within the confirmation window set at commissioning |
| Protocol and integration | Relay and analogue output as standard, with Modbus, BACnet and MQTT on the configured variant |
| Notification path | Alarm contact to the panel plus local indication at the device |
| Alarm behaviour | The alarm latches until reset, each channel reports its own fault state, and the self-check exercises both optical paths |
| Power supply | 24V DC control supply as the common configuration, with ratings per model datasheet |
| Housing and mounting | Housing rating per model datasheet with IP66 and IP67 options |
| Installation pattern | Aimed at the hazard from a position that keeps the whole risk area inside the cone, with the aim recorded at commissioning |
| Field of view and aiming | UV channel detection cone of 80 degrees or more per the specification sheet, treated as a cone rather than an area, with the aiming recorded on the commissioning sheet |
| Configuration and thresholds | Confirmation window, sensitivity and output mapping set at commissioning and recorded on the commissioning sheet |
| Maintenance and self test | Automatic self-check with fault, obscured lens and tamper conditions reported separately, test interval set by the site operator |
| Export documentation support | Technical file prepared to support local code submittals and national registration by the importer of record, including hazardous area file sets where they apply |
| Certification documents | CE, RoHS and REACH documentation per applicable model, with EN 54-10 and FM 3260 route papers where the device class applies and ATEX or IECEx papers per configuration, certificate number provided on request |
| OEM and ODM options | Logo, part number, packaging, manual languages, label artwork and platform identity string configurable |
| Full datasheet | Complete optical, electrical, radio and environmental data provided per model on request |
| Warranty | 36-month |
| Scenario | Recommended unit | Key benefits |
|---|---|---|
| Fabrication yard where cutting and welding happen daily in the same space | WANLIN-620 | Dual band logic means welding no longer produces an alarm, which is what keeps the system believed |
| Offshore module where the maintenance crew works with portable equipment | WANLIN-620 | The agreement requirement handles the arc and the lamp the crew brings with them |
| Engine test cell with fuel lines and hot exhaust in the same room | WANLIN-620 | Hot exhaust does not produce the ultraviolet signature, so the device stays quiet until both channels agree |
| Loading rack where a tanker is connected for an hour at a time | WANLIN-620 | The device covers the connection point, which is where the transfer is most likely to go wrong |
Documentation is prepared per destination rather than reused from the last market, and where a market runs its own scheme the file is prepared to support that submittal. Coverage includes UL 268 flame detector, UL 521 flame detector, FM 3260 flame detector, FM 3210 flame detector, EN 54-10 flame detector, EN 54-7 smoke detector, EN 54-5 heat detector, EN 54-25 wireless fire alarm, CE certified flame detector, CE marked flame detector, RoHS compliant flame detector, REACH compliant flame detector, FCC certified flame detector, ATEX certified flame detector, IECEx certified flame detector, SIL2 flame detector, SIL3 flame detector, NFPA 72 flame detector, NFPA 15 flame detector, NFPA 30 flame detector, NFPA 70 flame detector, BS 5839 flame detector, ISO 7240 flame detector, ISO 9001 flame detector manufacturer, ISO 14001 flame detector manufacturer, EAC certified flame detector, GOST certified flame detector, CCCF certified flame detector, TISI certified flame detector, SNI certified flame detector, SIRIM certified flame detector, PS Mark flame detector, DTI-BPS certified flame detector, BFP approved flame detector, BIS certified flame detector, SASO certified flame detector, SABER certified flame detector, Civil Defense approved flame detector, SBC 801 compliant flame detector and NIST traceable calibration flame detector. Which of those applies is determined by the destination and by the configuration rather than by us, and a certificate number is provided on request so your client can verify the issuing body reference directly.
| Item | Details |
|---|---|
| Product | UV/IR Flame Detector |
| System Reference | WANLIN-620 |
| Standard Route | combined ultraviolet and infrared flame detector construction to the standard named for the destination market, with EN 54-10 route papers on applicable models and local code submittal support per installation, with CE, RoHS and REACH documentation per applicable model |
| Hazardous area route | ATEX and IECEx route papers per configuration, with the protection concept, gas group and temperature class named on the certificate |
| Fire system route | EN 54-10 where the destination names it, FM 3260 route papers where the class applies, and NFPA 72, NFPA 15 and NFPA 30 references for the installation design |
| National registration support | local code submittal support with per-configuration technical files, hazardous area certificate evidence and national registration support for the importer of record, with UKCA, EAC and GOST, CCCF, TISI, SNI, SIRIM, PS Mark, DTI-BPS, BIS, SASO and SABER documentation prepared per destination |
| Verification and acceptance | Certificate number provided on request, and final acceptance rests with the market authority rather than with the factory |
| Factory quality system | ISO 9001 and ISO 14001 documented manufacturing, with calibration and test records kept per unit |
Buyers in this category usually arrive having already looked at two or three established brands, and the question they are really asking is whether a factory in China can hold the documentation together.
If you are comparing us with an established brand, the honest comparison is a specific one. Buyers arrive having looked at Honeywell flame detector alternative, Det-Tronics flame detector alternative, Siemens flame detector competitor, Bosch flame detector alternative, Panasonic flame detector competitor, Hochiki flame detector alternative, Apollo flame detector competitor, System Sensor flame detector alternative, Edwards flame detector competitor, General Monitors flame detector alternative, MSA flame detector competitor, Draeger flame detector alternative, Oldham flame detector competitor, Simtronics flame detector alternative, Spectrex flame detector competitor, Forney flame detector alternative, Fireye flame detector competitor, Rosemount flame detector alternative, Emerson flame detector competitor, ABB flame detector alternative, Schneider flame detector competitor, Johnson Controls flame detector alternative, China flame detector alternative, Chinese flame detector competitor, affordable flame detector, cost-effective flame detector, high-quality low-price flame detector, flame detector made in China, Chinese flame detector quality comparison and flame detector price comparison China vs Europe. The three things that decide it are the certificate number, the stated test fire behind any response claim, and the documents that arrive with the shipment, and those are the three we put in writing before you order.
The configurations buyers ask for most often sit in the current list: AI flame recognition detector, AI flame detection camera, video flame detection camera, thermal imaging flame detector, IR3 flame detector, UV/IR flame detector, multi-spectrum flame detector, explosion proof flame detector, intrinsically safe flame detector, 4G flame detector, 4G flame alarm, wireless flame detector, IoT flame detector, cloud flame detector, remote flame monitoring, real-time flame alert, early warning flame detector, high sensitivity flame detector, low false alarm flame detector, adjustable sensitivity flame detector, wide temperature flame detector, high humidity flame detector, dustproof flame detector, waterproof flame detector, IP65 flame detector, IP67 flame detector, SIL2 flame detector, SIL3 flame detector, ATEX flame detector, IECEx flame detector, UL listed flame detector, FM approved flame detector, EN 54-10 flame detector, NFPA 72 flame detector, flame detector for warehouse, flame detector for charging station, flame detector for battery storage, flame detector for data center, flame detector for oil and gas and flame detector for power plant. We quote against whichever of those your market actually searches for rather than against a single catalogue name, and where a configuration is not the right answer for your hazard we say so.
| Criterion | Wanlin Fire | Typical trading office |
|---|---|---|
| Price | Tiered factory pricing with 39% margin headroom typical for repeat partners, quoted per model and configuration | Single unit price with no configuration detail |
| Documentation | Certificate numbers, technical file per destination, test reports per model | General statement of compliance |
| Design support | Drawings review and cone count in writing before quotation | Coverage figure quoted per square metre |
| Configuration | Housing, logo, part number, packaging, manual languages and label artwork configurable | Factory branding on the housing |
| Lead time and stock | Ready to ship stock on standard configurations plus build slots for configured orders | Lead time quoted after the order |
| After sales | Spare parts and replacement cycle held under your part numbers | Handled case by case |
A first order in this category goes better when the sequence is drawings, certificate, sample and then volume, in that order. A standard order then follows 8 steps:
Three partners describe what changed after they moved the programme, in their own words.
A: Because most false alarm sources only produce one of the two signatures. A welding arc is rich in ultraviolet and weak in the infrared band a flame occupies, and a hot surface is the reverse. Requiring agreement removes both without slowing the response to a real fire, which is the whole reason the dual band device exists.
A: The confirmation window is a commissioning value and it is short, but it is not zero. Where the design case is an extremely fast fire the window can be shortened, and where the background is busy it can be lengthened. We record the value on the commissioning sheet so the setting is known rather than assumed.
A: Each channel reports its own fault state, so a failed ultraviolet element is reported as a fault rather than silently converting the device into a single band unit. That distinction matters because a device running on one band in a welding area will start producing the alarms you bought it to avoid.
A: On the rated configuration, yes, and the housing rating and temperature range are stated per model datasheet. Marine installations also bring vibration, salt air and the classification society into the decision, and we supply the documentation your class surveyor asks for rather than a general statement of suitability.
A: A documented test with a recognised test source at commissioning, then periodic testing at an interval the site operator sets. The device self-checks its optical path, but a self-check is not a proof that the device can see the hazard, and conflating the two is a common and expensive mistake.
The outcome: By working directly with manufacturer Wanlin Fire, Lima Marine Chief Engineer Johan Bergstrom gained 39% margin headroom through factory direct sourcing, a written cone count, per-model documentation and a commissioning sheet the site can produce after an event. The programme started with one sample order and grew into bulk order programmes.
For more information: www.wanlinfire.com | Export Service Hotline: +8613261677119 | Email: wanlinfirecontrol@163.com