4-pack Window Alarm for Home Security,Vibration Glass Break Sensor,No-Drill

[Loud Alarm for Windows and Glass Doors] When the window, glass door, or other surface is tapped, shaken, hit, or broken, the alarm sounds at up to 130dB to help scare off unwanted entry.
[Adjustable 5-Level Sensitivity] Set the vibration sensitivity based on where you use it. A lighter setting works well for small vibrations, while a lower sensitivity setting helps reduce false alarms from daily movement.
[Made for More Than Home Windows] Use it on sliding glass doors, patio doors, car windows, RV windows, campers, safes, cabinets, drawers, and other spots where you want simple extra protection.