optical chamber smoke alarm

New Zealand Building Code smoke alarm 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···

4G fire alarm smoke detector direct from Wanlin Fire Protection — 12-year factory experience, WL-SM608 4G standalone smoke detector certified CCCF/GB 20517-2006/CE/UL 217/EN 14604. Key specs: Dual Light Path Photoelectric + 4G Cat.1 + Cloud Platform + Complete Installation Kit + 10-Year Design, 4G LTE Cat.1 + Cloud Platform + Mobile APP + Complete Kit (Detec···