- 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
Expand your Ring alarm kit and add an extra layer of security to your home with alarm contact sensors. The alarm contact sensor is easy to setup and installs in just minutes. Attach alarm contact sensors to any door or window frame in your home, arm your alarm system, and you’ll get instant alerts on your phone and tablet whenever they open.