Item Type: Door Window Sensor Material: PC Battery: 1.5V 2 x AAA batteries(battery not included) Standby current: ≤5uA Protocol: IEEE 802.11b/g/n Wireless Range: Approx. 50m/54.7yd Operating Temperature: -10℃ - 40℃(14℉ - 104℉) Working Humidity: 20% - 85% Storage Temperature: -10℃ - 60℃(14℉ -140℉) Storage Humidity: 0% - 90% Wireless Network Type: 2.4GHz Standby Time: 4 - 6 Months 1、Application scenarios are widely used, small, mini, simple and convenient to use, and can be carried on a business trip. It can also be used for rental houses, homes, shops. 2、Doors and windows are smarter. When you leave your home, if the door or window is opened or invaded by an external object, it will notify you and you will immediately find the abnormality. 3、When the door and window are opened(the door sensor is separated from the magnetic stripe), the door sensor immediately senses and sends a notification or linkage smart home. 4、Mobile phone remote viewing, you can grasp the situation at home when you go out. 2.4GHZ wireless network, more stable, faster and more convenient. 5、It can be connected by WIFI with one button, no home gateway is needed, and intelligent control of household appliances can be easily realized, simple operation and convenient use. 2 x Door Magnetic 2 x Sticker 4 x Screw 1 x Manual