Features: Remote MonitoringThrough the mobile APP, you can observe the dynamics of smoke in real time. Make your home smarter, no matter how far away from home. High Sensitivity Smoke DetectionWhen fire breaks out, the sensor will detect smoke sensitively, and send an alarm ringtone, then push notifications to your smartphone to protect people and property. 85dB Loud SoundOnce triggered, the red LED will flash with loud high volume alarm sound, louder than 85dB. With test and silence key. Excellent Design & Super QualityExclusive smoke intelligent algorithm, high sensitivity, no false alarm, strong anti-interference. Widely ApplicationEasy to install and clean. Widely used in home, factory, school, shop, offices, villas, residential areas where fire prevention alarm is needed. Specifications: Power Supply: battery (not included) Standby Current: 15uA Alarm Current: 50mA Alarm Indication: Red led flash Sound Level: 85dB/M Detecting Area: 20 square meter Alarm Output: WIFI Wireless Type: 2.4GHz Protocol: IEEE 802.11b/g/n APP: SmartLife/Tuya Operating Temperature: -10C ~+50C Operating Humidity: 95% RH Package Size: Approx. 13.5 * 13.2 * 4.5cm / 5.3 * 5.2 * 1.8in Package Weight: Approx. 209g / 7.4oz Package List: 1* WIFI Smoke Detector