2 in 1 Personal/Door Burglar Alarm
This is a 2 in 1 Personal Panic/Door Alarm. It acts as a burglar alarm and a personal alarm. Hang it on any door knob (non-metallic doors) and it instantly and automatically sounds when an intruder touches the door knob. Carry it with you as a personal panic alarm and just pull out the metal chain to sound the alarm and deter an assailant. The alarm is a loud 120 decibels. Requires one 9 volt battery.