Wireless Door Window Sensor WiFi Smart Door Intrusion Detector Home Security Alarm Works with Amazon alexa assistant or Rokid Overview: Our door sensor works great! It's easy to install and use! It is app remote-control. Leading you to a smart life. Come and have a look. Features: * Download app "TUYA" from App Store to add the device to detect the status of your door / window. Home security in your hand all the time. * Simply attach one piece to your door or window, and attach the other piece to the door or window frame. * Battery  powered, convenient for you to replace the battery and easy for you to install with stickers. * Ideal intrusion warning for homes, apartments, mobile homes, dorms, offices, hotel rooms, garages, etc. * Low-consumption design, which can make it work long time. * Simple design with a compact size, elegant and . * This sensor needs to work with Amazon alexa, assistant, or Rokid. Specifications: Two Status: Open & Close Battery: 2 * 1.5V AAA Batteries Standby Current: ≤5μA Protocol: IEEE 802.11b/g/n Wireless Range: 50m Operating Temperature: -10℃~40℃ (14°F~104°F) Operating Humidity: 20%~85% Storage Temperature: -10℃~60℃ (14°F~140°F) Storage Humidity: 0%~90% Standby Time: 8-10 months Wireless Type: 2.4GHz Package Information: Package Size: Approach. 8.5 * 5.5 * 2.5cm / 3.35 * 2.17 * 0.98in Package Weight: Approach. 63g / 2.22oz Package List: 1 * Wireless Door / Window Sensor 1 * User Manual (English) 2 * Stickers