Tuya WiFi Door Magnetic Sensor Remote Intelligent Linkage Doors Windows Switch Anti-alarm APP Reminder Alarm 1. Composite multi-layer design 2. Built-in omnidirectional antenna 3. High performance, low power consumption 4. Protocol: IEEE 802.11bgn 5. Material: ABS 6. Working power supply: 2 x AAA 1.5V (battery not included) 7. Wireless type: 2.4GHz (not support 5G) 8. Shock resistance: 4.7M, 1.2M, 3.5M, 300k 9. Transmission distance: 50-200m in open area 10. Product list: door and window sensor + smart door sensor detector 11. Size: 72x45.5x14mm 12. Weight: 50g - For Alexa and for Google Home: Just use your voice to control connected devices via for Alexa or for Google Home; it also works with other Smart Life compatible smart devices for automatic control; convenient for you to detect your doors, windows, cabinets, drawers or any where you want to be notified when it is opened or closed - Enjoy your smart life: When you leave home, it will push notification messages to you when the doorwindow is opened or closed, so that you can spot intruders in time; moreover, you can share the device with your family and track the history of sensor activities - Easy to install: No complicated installation tools are required; just a few steps to install the sensor with double-sided tape or screws (included), and download the app Tuya or Smart Life from GooglePlay or App Store to add the device to detect the status of your doorswindows