Tuya Door/Window Sensor Real-time Alerts Notification Sensor For Google Alexa Features: Matter Door Sensor:Detect the open/close status of doors and windows. Scan the QR Code to Add Device:Connecting to the Matter gateway, easy to add, fast response. APP Remote Control:Home is in the hands,whenever and wherever. Real-time Alerts and Notification:Receive alerts when the door or window is opened/closed. Linkage Alarm with Power Plug:Light up your home when you open the door. Tamper Alarm More Secure:It will be triggered when someone tries to remove the cover and will push alarm notification to your smartphone. USB and Battery Power Supply:Long-term power supply,say goodbye to power outages. Matter Eco-System:Share devices to other third-party platforms Specification: Matter Thread USB Door Sensor/Window Sensor Detect open/close status of the door/window Button for Alarm on/off Support Matter protocol,run in multi-platforms,cross-brand linkage Support App remote control and third-party voice control Battery : CR123A*1 （Delivered with batteries） Battery Life ( standby ) : 1 year Wireless Protocol: Thread Wireless Frequency: 802.15.4 MAC/PHY @ 2.400 - 2.483GHz Wireless Distance: 45M Working Temperature: 0℃ ~ 50℃(32℉ ~ 122℉) Working Humidity: 1% ~ 85%RH (non-condensing) Size:Main body: 87mm x 27mm x 23mm Deputy body: 50mm x 13mm x 16mm Package include: 1*Door Sensor(Main body+Deputy body) Notes: Package does not include other products such as mobile phones. Thanks!