The sensor cannot be used alone. To use it, it must be paired with the TUYA ZIGBEE HUB.PropertiesOpening and closing doors, windows, appliances and furniture cabinet doors, drawers, etc. to see.Properties1.Beautiful and stylish appearance, easy to integrate into different environments2. Support DIY design, rich scenes, 3. Intelligent linking, toolless installation4. Termination planning in the field of occupational safety5.With command prompt function for low voltage monitoring6. Wireless transmission of data signals7. Very low power consumption and long battery life8. Time to send online reports to the hosteasy attachment to door and window framesAlarm in case of unauthorised entrydiscreet designCommunication with the Smart Home System and the Smart Home Appdetects open doors and windowsProtection class: IP 20battery operated (1 x CR2032 battery not included)