Ring's Alarm system offers whole-home security in an easy to set up DIY package. Using the Ring app on your smart device (available on i OS & Android) you can can get notifications when someone enters a room, opens a window, or sets off the siren. You can change Alarm modes via the app, & if you should forget to set it before you leave, you can set it remotely from your smart phone. Expandable, & working with Ring's range of video doorbells & security cameras, Ring products allow you to set up an integrated ring of security around your home for peace of mind. Ring Alarm Motion Detector The Ring Alarm Motion Detector connects to your Ring Alarm Base Station & mounts to any indoor wall or corner, so you'll always know when there's activity at home. You can choose to get audio or mobile notifications whenever motion is detected inside your home. You can adjust motion sensitivity to avoid unnecessary notifications caused by pets (weighing under Approx. 22kg). Please note: This add-on component requires the Ring Alarm Base Station in order to work, which is available as part of the Ring Alarm Security System (sold separately).