WiFi Smoke Detector, Wireless Smart Fire Smoke Detector with App Notification, Mute Button, Smart Fire Detector, Auto Self-Checking Function, Complies with EN 14604 Standard, WIFI303 : Amazon.de: DIY & Tools
How Does a Smart Smoke Alarm Work? | Westridge Electric
Fire Alarm Wireless Battery Operated Stand Alone Optical Photoelectric Portable Smoke Detector - China Smoke Detector Sensor, Smoke Alarm Sensor | Made-in-China.com
Source Portable fire alarm smoke detector for residential house on m.alibaba.com