Specifications APP Smart Life Android and iOS supported Power Supply 3V CR123A lithium battery Size Φ7 8 55cm Operating Life 10 years Battery Life 3 years Sensor Type Photoelectric Safety Standard EN 14604 2005 AC 2008 Standby Current 15 μA avg Alarm Current 100 mA avg Operating Ambient Temperature 0 55°C Operating Relative Humidity 85 non condensing Alarm Loudness ≥85 dB at 3m 3 2 0 3 kHz pulsing alarm Silence Duration About 10 minutes Wireless Frequency 2 4GHz Incompatible with 5 GHz Wi Fi network Wireless Protocol IEEE802 11b g n Features 1 Long Operating Life Enjoy peace of mind with an impressive 10 year sensor lifespan ensuring reliable performance for years 2 Smart Connectivity Integrate seamlessly with the Tuya Gateway for real time alerts and controls via the Smart Life app available on both Android and iOS 3 High Sensitivity Take advantage of photoelectric sensor technology which provides enhanced smoke detection capabilities for timely warnings 4 Audible Alarm The device emits an alarm at a sound level of ≥85 dB ensuring audibility even from a distance of 3m 5 Energy Efficient Powered by a 3V CR123A lithium battery with a 3 year battery life offering energy saving functionality without frequent replacements Package Included Without Battery Version 1 x Smoke DetectorWith Battery Version 1 x Smoke Detector1 x Battery