Features : Security Gets Smarter! It will push notification messages to you when the door/window opens or closes, so you can discover the intruder in time while you are not home. Furthermore, you could share the device to your family members and track the history of sensor activities - Compatible with Alexa & Google Home: Simply use your voice to control the connected devices by Alexa or Google Home. It can also perform auto control together with other Tuya smart devices. Convenient for you to detect your doors, windows, cabicoms, drawers or anywhere you want to be notified when it is opened or closed. 鈥? Not compatible with IFTTTAPP: Tuya Smart or Smart Lifer - Specification:* Connection: Wi-Fi IEEE 802.11 b/g/n 2.4GHz * 5GHz Wi-Fi: NOT supported * Power Supply: 2*AAA 1.5V Batteries(Not included in the package) * Standby Time: 6-12 Months * Operating Temperature: -20-60鈩? br /> * Standby Current:5μ - A * Working Current: 10μ - A * App: Android 4.4/i - OS 9.0 or Later * Alarm: App Push Notification * Material: PC * com weight: 42g * Dimensions: 94*40*20mm(Host); 94*14*20mm(Magcomic Bar)Package includes :1 x Door Sensor 1 x User Manual 1 x Screws Kit