Ring Alarm Contact Sensor - 2nd Generation security door controller Housing 1 door(s) Ethernet

Get real-time notifications the moment a door or window opens in your home. Now with a more compact design and a slim removable magnet for easy installation, even when space is limited. Make sure your doors and windows are shut. Alarm Contact Sensor simply connects to your Alarm Base Station and includes a removable slim magnet for easy installation on any door or window frame in your home. Choose to get audio or mobile notifications so you’ll always be the first to know whenever your doors or windows are opened.