Security Systems & Smart Hubs

Get real-time notifications the moment a door or window opens in your home.
Now with a more compact design and slim removable magnets for easy installation, even when space is limited.
E more→asy, tool-free installation.
Mounts to doors and window frames.
4 x CR2032 Lithium Coin Cell 3V.
Requires Ring Alarm Base Station. Compatible with 1st and 2nd generation Ring Alarm devices and accessories.
Alexa can notify you when your Ring Alarm Contact Sensors and Motion Detectors are running low on batteries.