Operating Temperature:0 Celsius~ 40 Celsius (32Fahrenheit~104 Fahrenheit). Free APP:Tuyasmart,one key setup wifi or ap mode connection with wifi. This is a smart motion sensor which can work dependently without hub,can accurately detect moveing in the room, push and start the voice assistant to protect the house security. Besides,it can IFTTT other smart items.Also,it can associate 2 device sot work to creat your own scene and shart your devices to others directly how to work: Run "smart life" from your smartphone desktop.Register and login.select device type,select "PIR" in the list to add the device. Detect the status of moving,compatibe for Tuya. Standby current:10uA Wireless Type:2.4GHz Protocol:IEEE 802.11b/g/n Wifi distance:45m. Colour: white Material: ABS Size: 63 x 63mm Package Contents: 2 x smart sensor Only the above package content, other products are not included. Note: Light shooting 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.