Sonic Alert Alarm System set

Sleep peacefully, knowing that if someone enters your home, the alarm will ring. As soon as door opens, the magnetic sensor activates the alarm, and wakes you up. It might even scare the intruder away! This sonic alarm system installs in minutes without having to call a qualified technician. Simply stick the unit to a window, door or cabinet thanks to the double-sided adhesive tape on the alarm unit and magnet.