Security Planet

This device is ingenious in that it uses a grounding-type activation system to sound alarm. If someone touches the doorknob of your door, the alarm will sound until they let go. They can lay one finger on the doorknob and the result is the same, 90 decibels of an alarm blast. Great for travel, home, apartment, dorm. Doubles as a personal alarm! Just pull the pin and alarm sounds instantly.

Key Features:

* Sounds instantly when intruder touches door knob!
* Works on all non-metallic doors w/ metal door knob
* Doubles as a personal alarm!
* Piercing 90-decibel alarm
* 9-volt battery power ( not included )