Magnet Door and Window Alarm

This compact, attractive door and window alarm uses magnetic affinity to initiate its 110 decibel siren. The base of the alarm is bolted to door or window frame, the actuator is connected to the window or door. Can also use the included double stick tape strips. The alarm is activated by opening the door or window. Great for any door or window, particularly those hard to protect sliding glass doors. Requires 3 lithium button cell batteries (included). Can be turned off to use door or window.