Built-in magnetic trigger
The perfect safeguard to detect intruder break-ins via the door or window of your house, apartment, office or RV
Simple peel and stick installation
Superior adhesive backing for optimum sticking power
Includes 3 x LR44/AG13 button cell batteries
Color:White 2 Pack
With its simple peel and stick installation, ultra-slim design and loud alarm, the Ultra-thin Door and Window Alarm w/Chime is a low cost, effective solution to home security. The magnetic Ultra-thin Door and Window Alarm w/Chime is a sleekly designed unit enabling it to function with many sliding glass windows and doors. The alarm is triggered by entry opening. Place the included magnet on the outside frame of any window or door you wish to protect. When opened by an intruder, the magnetic circuit is broken and a loud alarm will sound.