Expand your Ring alarm kit and add an extra layer of security to your home with alarm contact sensors. Attach alarm contact sensors to any door or window in your house or apartment, and you’ll get instant alerts on your phone and tablet whenever your doors or windows are opened. The alarm contact sensor is easy to setup and installs in just a few minutes. Simply place your contact sensor on any door or window frame, connect it your Ring alarm base station, and you’re ready to go

Product Features

• Requires the Ring alarm base station
• Get instant mobile alerts when doors or windows open in your home
• Compatible with any iOS or Android device
• Easy installation with no tools required
• Mounts to door and window frames
• 3V lithium battery included