gas detector with relay output

Apollo smoke alarm alternative — Wanlin, 12-year Chinese smart fire detector manufacturer, WL-SM604 (Wireless Interconnected RF Smoke Detector) certified UL/CE/EN54. Photoelectric + RF Mesh + 24-Detector Interconnect + Self-Healing + 10-Year Battery. 10-year battery, 4G/NB-IoT/LoRaWAN, OEM/ODM from 500 units, factory direct pricing 50-70% below Western brand···

4G Gas Alarm China manufacturer. 4G gas detector with catalytic combustion sensor (LEL), auto shut-off valve, 4G Cat.1 cellular alarm, cloud platform monitoring. EN50194 & UL2075 certified. OEM/ODM, wholesale, global shipping to Philippines. Contact: wanlinfirecontrol@163.com