Shop name:Chong Qing Shuo Yue Ke Ji You Xian Gong Si APP Remote Control: Simple download APP "Smart Life/Tuya Smart" in or add the device to detect the human body movement. Home security in your hand all the time. Advanced Motion Sensor: PIR detects human body or animals that are moving, 150 detection angle, 7m detection distance, can achieve real-time monitoring day or night. Emergency Alert Push Function: When there is movement detected, the alert notifications will be pushed to your phone, be aware of what's happening even when you're . History Records Tracking: You can track the history of sensor activities. Strong Performance & Ultra-long Standby Time: Long transmission distance, high sensitivity, and strong network signal. Ultra-long standby time. Powered by CR2450 batteries(Built-In). Mini body, small and exquisite ZigBee 3.0 wireless procotol Intelligent linkage with other Tuya products Human motion detection, instant App notification, no missing alarm Multi-scenario application, easy to install Colour:White Material:ABS Size: 8.1 x 3.4 x 3.4cm Package Contents: 1 x sensor Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.