Key features:

Protect Against Smashing: Traditional contact sensors only trigger if a window or door is opened. Glass break sensors trigger if the glass is smashed without the frame being opened, alerting you before an intruder can climb through.

Wider Coverage: A single acoustic sensor can protect an entire room with multiple windows or a large sliding glass door, which is often more efficient than placing a contact sensor on every single pane.

Always Armed: Unlike motion detectors, which you often have to turn off when you are home, glass break sensors can typically remain armed 24/7.