Feature 1、【Enjoy Your Smart Life】When 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. 2、【Smart Voice Control】Compatible with Alexa \u0026 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. 3、【APP Remote Control】Download 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. 4、【Share Control \u0026 History Records Tracking】You could share the device to your family members and track the history of sensor activities. 5、【Easy to Install】No complicated installation tools are required. The sensor can be installed with double-sided adhesive tape or screws(included) in just a few steps. Features: 【Enjoy Your Smart Life】When 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 Control】Compatible with Alexa & 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 Control】Download 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 Tracking】You could share the device to your family members and track the history of sensor activities. 【Easy to Install】No complicated installation tools are required. The sensor can be installed with double-sided adhesive tape or screws(included) in just a few steps. Specifications: Power Supply: 2*AAA 1.5V(not included) Standby Current: ≤5μA Standby Time: 4-6months Wireless Range: 50m(open area) Alarm Distance: ≥1cm Protocol: IEEE 802.11b/g/n Wireless Type: 2.4GHz APP: SmartLife/Tuya Material: Superior ABS Operating Temperature: -10℃~ 40℃ Operating Humidity: 20% ~85% 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) Package List 1 * Wireless Door/Window Detector 1 * Set of Mounting Screws and Stickers 1 * User Manual (English)