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gas alarm with LED indicator — Wanlin, 12-year Chinese smart fire detector manufacturer, WL-SM602 (LoRaWAN Smart Photoelectric Smoke Detector) certified UL/CE/EN54. Photoelectric + LoRaWAN 15km + Ultra-Low Power + 10-Year Battery. 10-year battery, 4G/NB-IoT/LoRaWAN, OEM/ODM from 500 units, factory direct pricing 50-70% below Western brands.
gas detector with relay output direct from Wanlin Fire Protection — 12-year factory experience, WL-GA208 4G gas detector certified CE/EN50194/UL2075/FCC. Key specs: Catalytic Gas Sensor + 4G Cat.1 + Cloud Platform + Complete Installation Kit + Solenoid Valve + 10-Year Design, 4G LTE Cat.1 + Cloud Platform + Mobile APP + Complete Kit (Detector + Valve + Moun···