rail yard smoke alarm

co-housing smoke detector direct from Wanlin Fire Protection — 12-year factory experience, WL-SM601 4G standalone smoke detector certified CCCF/GB 20517-2006/CE/UL 217/EN 14604. Key specs: Dual Light Path Photoelectric Sensing + NB-IoT Cellular Communication + Maze Sensor Structure, NB-IoT + Cloud Platform + SMS/Push/Email Alerts + Low-Power Wide Area. Dual ···

WEEE compliant smoke detector direct from Wanlin Fire Protection — 12-year factory experience, WL-SM600 4G standalone smoke detector certified CCCF/GB 20517-2006/CE/UL 217/EN 14604. Key specs: Dual Light Path Photoelectric Sensing + 4G Cat.1 Cellular Communication + Maze Sensor Structure, 4G LTE Cat.1 + Cloud Platform + SMS/Push/Email Alerts + Remote Monitor···