Simply place the alarm behind any door. If an intruder attempts to open the door, the wedge-shaped design will prevent it from opening and activate a 120 dB alarm.
The alarm will scare off the would-be intruder and alert you to the attempted entry.
An adjustable sensitivity switch prevents tampering.
When traveling, just toss this lightweight unit in your luggage. The on/off switch will prevent the unit from accidentally sounding.
Requires one 9 volt battery - not included