SwitchBot Contact Sensor | Smart Wireless Window Alarm and Door Sensor, Add SwitchBot Hub Mini to Make it Compatible with Alexa

Sale price$34.99


SwitchBot Contact Sensor is made up of two components that are fixed close to each other on things such as doors and windows. With a detection range of up to 16.4 ft (5m), 90° horizontally, and 55° vertically, any movements that your door or window makes can be detected to help notify you when contact takes place. Just simply align the magnet area with the bottom of SwitchBot Contact Sensor’s main body, and you’re good to go.


  • Window & Door Alarm Sensor for Home Security - SwitchBot Contact Sensor can detect the opening/closing of doors and windows, guarding security of the elderly, children, and pets. With the built-in light sensor, it will automatically trigger the SwitchBot Bot to turn on the light when someone moves when the environment goes dark. The magnets need to be aligned with the bottom of the body, and the distance between the two components needs to be less than 1.2 inches (30mm).
  • Detects People Leaving or Entering the Home - With the built-in motion sensor, Contact Sensor will know whether you are leaving or coming home, making it possible to trigger the different actions you set in the "Scene" in the SwitchBot app. When it detects you leaving home, the appliances will automatically turn off, and when it detects you coming home, the appliances will automatically turn on. (SwitchBot Hub Mini required)
  • Easy to Install & Place It Anywhere - Thanks to the small and wireless design with long battery life, you can install Contact Sensor tool-free and get it set up in seconds. Place it on a medicine box to track whether the elderly are taking their medication, or place it on your pet's cage to know if your kitten has slipped away.
  • Part of the SwitchBot Ecosystem - Connect Contact Sensor with other SwitchBot products and set up a ”Scene“ in the SwitchBot app. When windows are opened, the SwitchBot Bot will be triggered to turn off the Air purifier automatically.
  • Remote Alert Notification & Voice Alarm from Alexa - You will receive a door-open alert notification on your phone if a suspicious person enters the house while you are away. Alexa will start a voice alarm to scare off any burglars, ensuring your apartment security.

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Customer Reviews

Based on 1 review
great for security!

I set up to receive notifications every time someone opens our main door and it's cool how all details especially the date and time are logged into the switchbot app. very helpful and great for security