long battery life smoke detector

activation success smoke alarm direct from Wanlin Fire Protection — 12-year factory experience, WL-SM605 4G standalone smoke detector certified CCCF/GB 20517-2006/CE/UL 217/EN 14604. Key specs: Dual Light Path Photoelectric + LoRaWAN Long Range + Maze Sensor + Low Power, LoRaWAN + IoT Gateway + Cloud Platform + Long Range (up to 15km) + Battery Optimized. D···

NB-IoT cellular smoke alarm direct from Wanlin Fire Protection — 12-year factory experience, WL-SM600 fully certified CE/EN14604/FCC/RoHS/REACH. Key specs: 4G LTE Cat.1 + LoRa wireless, 10s alert push via APP/SMS/call, 10-year sealed lithium battery, CE/EN14604/FCC certified. MOQ 200pcs, 20-25 working days, OEM/ODM custom branding available. Serving 60+ cou···