maintenance free smoke detector

Indonesia NB-IoT smoke detector — 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.

maintenance free smoke detector manufactured by Wanlin Fire Control - professional 4G standalone smoke detector with dual optical path photoelectric sensing. 4G Cat.1 connectivity, 3-year battery, EN14604/CCCF certified, 95dB+ alarm, 60sqm+ coverage. CE/RoHS/FCC compliance. Factory-direct pricing, global shipping, complete export documentation. OEM/ODM avail···