Place Alarm Motion Detectors in each room of your home to get mobile alerts whenever motion is detected indoors. Requires the Ring Alarm Base Station. Compatible with 1st & 2nd generation Ring Alarm devices & accessories. Set your security in motion Mount Motion Detectors to room corners or flat walls & choose to get audio or mobile notifications whenever motion is detected inside your home. The Ring Alarm Motion Detector connects to your Ring Alarm Base Station & mounts to any indoor wall or corner, so youll always know when theres activity at home. Requires the Ring Alarm Base Station Pet-friendly to avoid unnecessary notifications from pets weighing under Approx. 22 kgs. [1] Mounts to room corners or flat walls.