Alarm systems like Ring can feature not only cameras, but also several sensors, which detect if a door or window is opened. While Ring features several differently sized Alarm Security Kits ...

The Ring Alarm 5-Piece Kit includes a base station ... alarm when its components stop touching each other such as when a window is opened, a motion detector that’s triggered by movement ...

We've tested and reviewed systems from Ring, SimpliSafe ... A home security system, on the other hand, focuses on door/window sensors, independent motion sensors, glass-break sensors and similar ...