Features: Enjoy Your Smart LifeWhen you leave home, it will push notification message to you when the door/window opens or closes, so you can discover the intruder in time. Smart Voice ControlCompatible with Alexa & Google Home. Simply use your voice to control the connected devices. It can also perform auto control together with other smart devices which are compatible with Smart Life or IFTTT. Convenient for you to detect your doors, windows, cabinets, drawers or anywhere you want to notified when it is opened or closed. APP Remote ControlDownload app "Smart Life" from GooglePlay or App Store to add the device to detect the status of your door/window. Home security in your hand all the time. Share Control & History Records TrackingYou could share the device to your family members and track the history of sensor activities. Easy to InstallNo complicated installation tools are required. The sensor can be installed with doublesided adhesive tape or screws(included) in just a few steps. Specifications: Power Supply: 2*AAA 1.5V(not included) Standby Current: less than 5microamps Standby Time: 46months Wireless Range: 50m(open area) Alarm Distance: more than 1cm Protocol: IEEE 802.11b/g/n Wireless Type: 2.4GHz APP: SmartLife/Tuya Material: Superior ABS Operating Temperature: 10 celsius 40 celsius Operating Humidity: 20percent 85percent Size: Main body (D*W*H): 66*28*20mm Deputy body (D*W*H): 66*10*20mm Package Information: Package Size: Approach. 6.6*4.2*3.7cm / 2.6*1.7*1.5in Package Weight: Approach. 44g / 1.55oz Package List: 1 * Wireless Door/Window Detector 1 * Set of Mounting Screws and Stickers 1 * User Manual (English)