Multi-purpose: Functions as both a door stopper and alarm, Featuring a rubberized base to secure the door and alert intruders. Door stop alarms are offered in two sizes for various door-to-floor gaps: 0.6'' and 1.2''.
Loud Alarm: Very loud shrill that would definitely scare someone away with 120db alarm. Weight: 4.5 oz.
Easy to Use: No installation required, Simply place the alarm behind any inner pull door (home, hotel, etc). very convenient to take with you when travel or stay indoor alone. A really must have around you.
Powered by 9V Battery: The door stop alarm powered by 9V battery, One piece can be used for a year under normal circumstances. Very practical. (Note: Battery not include)
3 Level of Sensitivities: High-Medium-Low Sensitivities, which can be adjusted according to your own needs.