1. Newly designed 3-in-1 sensor, human infrared sensor; light sensor, intelligent scene switch. 2. Human motion detector, APP notification to protect your family safety. 3. Smart scene switch function, can control the smart light bulbs in your home. 4. Intelligent linkage control, this sensor can be connected to other smart devices to make your life more convenient. Product name :3 in 1 Senso Dimensions:51x51x21mm Weight: 18.5g Battery(WiFi Version):AAA*2(not include) Working temperature: 5-60 Working humidity:20%-80%RH Wireless protocol: 2.4GHz Wi-Fi Working voltage:DC 3V Colour:White Material:plastic Package Contents: 1 x PIR Motion 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 a little different from the real thing. The measurement allowed error is +/- 1-3cm.