SwitchBot Door Alarm Contact Sensor Smart Home Security Wireless Window and Sensor, Add Hub Mini to be Compatible with Alexa

SMART HOME INTEGRATION: Connect the SwitchBot contact sensor to your smart home app to receive notifications about door and window status Easy installation: self-adhesive installation without tools, ideal for doors and windows in your home or office Real-time monitoring: Instant notifications on your smartphone when doors or windows are opened or closed Battery operated: long-lasting battery for months of operation with battery level indicator in the app Versatile use: suitable for different doors and windows, allows monitoring of multiple access points at the same time, Weight: 0.1984160358 pounds, Manufacturer: Switchbot