The DOOR GUARD ALARM is a very home, office or travel.
This alarm requires no installation, simply hang it on any doorknob and it instantly
detects any vibration.
When the alarm is tripped, it will emit a 98 dB alarm for 20-30 seconds, then will reset in 3-5 seconds.
The sensitivity of the alarm is easily adjusted with a screwdriver.
The Door Guard can also be used as a flashlight. Uses 2 AAA batteries (not included).