TUYA wireless photoelectric smoke detector, Wi-FiFeatures: This smart wireless photoelectric smoke sensor detects smoke from any side It triggers an acoustic-optic alarm and via Wi-Fi sends alert messages with TUYA appThe smoke detector is connected and configured directly via the Tuya Smart or Smart Life appNo additional control panels required, no devices, just 24GHz wireless internet and a smart Android or iOS deviceEasy to use Lightweight and small, features ultra-low-power MCU designRecommended ceiling mount in the centre of the room for more effective detection, keeping at least 30m distance from the lights and >15cm away from walls and corners Can be mounted on a sloping attic ceiling, 90cm from the ceiling topRequires two AAA batteries (not included) Make sure the distance from the smoke detector installing place to Wi-Fi router is within 10 metersSpecifications: Power supply: DC 3V – 2x AAA 15V (batteries are not included)APP: TuyaSmart (Android, iOS)Sound alarm:> 80dB / 1mFlashing alarm: red LEDAlarm current: <160mAStandby current: <15mAWi-Fi network protocol: 80211 b / g / nOperating temperature: -10°C ~ + 50°C, at 0%~95% RHDetection area: 20 sq metersLow voltage notification: <24VDimensions: 80mm x 38mmWeight: 73gMounting: ceiling / sloping ceiling, with screws/ 3M adhesive tapePacking list: Smoke detectorMounting screws3M adhesive tapeWarranty: 24 months