Fire Alarm & Smoke Detector, Alarm & Security Systems, Carbon Monoxide Alarm manufacturer / supplier in China, offering 240V Wireless Vape Detector with Temperature/Humidity with DC5V Backup Battery, 220V-240V Main Hardwired Interconnected Smoke Alarm with 10 Years Battery Backup, Anka Mini Wireless Water Leak Sensor 10 Years Battery Water Leakage Detector and so on.