ZigBee Mesh Connect More ZigBee Items with Stable Network Make Smart Secens on App, to let the device control automatically Works with other devices in your Smart Life App. Voice Control - Compatible with Amazon Alexa, Google Home.- You can use voice commands to query the opening and closing status of doors and windows, the battery level of the device. Automation Function - After you set the automation in the app, the light can be turned on automatically.- With tuya zigbee gateway and light module, it can automatically turn on the light when opening the door. Curtain Automation With tuya zigbee gateway and curtain module, the curtain can be automatically opened or closed when the door is opened. Monitor the Door or Window Status in Real-time - APP Name: Smart Life, or Tuya App Keep Your Home Safe Get alerts when your door or window open, close. Door Window Open Reminder & History No matter where you are, as long as there is an internet connection, you will receive APP notifications when the door is opened/closed, and you can view the history of the door opening and closing. Easy to Use Easy to use, you can stick the sensor to any foldable device in your home to make it smarter. Dimensions & Installation - You can mount the sensor on the door or window with the double-sided tape.- You can fix the sensor on the door or window with screws. Specification Battery Type: 2 * AAA Battery (not included in the box)App Name: Smart Life, or TuyaWireless Protocol: ZigBee 3.0(not support 5GHz WiFi)Colour: WhiteCertification: CE, RED, RoHSPlastic Material: ABSPatented Design: YesProduced by ISO9001 Factory: Yes