Dual Function: Can be used as a door stop alarm and door stopper, Its high damping rubber bearing can prevent the door sliding and prevent the bad guys into. A protector around you. Can be used in home and travel.
3 Level of Sensitivities: High - Medium - Low Sensitivities. Which depends on the distance door touch the door stop alarm.
Loud Alarm: Very loud shrill that would definitely scare someone away with 120db alarm. Weight: 4.5 oz.
Powered by 9V Battery: The door stop alarm powered by 9V battery, One piece can be used for a year under normal circumstances.
Easy to Use: no installation required, Simply place the alarm behind any door (home, hotel, etc). It is very convenient to take with you when travel or stay indoor alone. A really must have around you.
Product Specification: Alarm volume: 120DB Product size: 140x45x40 mm. Product weight: 90G Sensitivity L file: low sensitivity. Sensitivity M file: sensitivity. Sensitivity H file: high sensitivity (vibration alarm).