ALRMD20WT Door / window alarm

Door/Window Alarm Magnetic Sensor | Battery-powered | 2x CR2032 | 85 dB | White

This ultra-thin window/door alarm device triggers a burglar alarm when a door or window is opened. The device can be turned on and off as needed using the simple switch on the side of the unit. Its slim profile makes it ideal for mounting on a window or door. The alarm requires 2 x CR2032 batteries (included). The alarm features an indicator light that signals when the battery is nearly empty. Press the “Battery Test" button on the front of the unit to check the battery status. The alarm unit is installed using a set of double-sided adhesive tape (included): Attach the alarm and magnetic sensor to the door or window, and you’re all set.