Wedge Guard Alarm - For Safety and Security

You are bidding on this TechKo Safety and Security Wedge Guard. It is a door break-in protection and alarm. Provides both entry and vibration activation of alarm with wedge stop protection.
Ultra high output 120 db alarm dounds instantly, providing a powerful deterrent to intruders.
You can use this on any door, requires no tools for installation.
It takes a standard 9V battery - not included.