[Dual Function]: This alarm can be a door stop alarm or a door stopper.Loud 120 decibel alarm sounds when button is pressed.Also can as common door stopper when turn down the ON/OFF switch,hold door in open position.
[3 Level of Sensitivities]: Hige -Midium- Low sensitivities can be chosed by an adjustable sensitivity switch on the side.
[Powered by 9V Battery]: The door stop alarm powered by 9V battery,.Very practical,Portable and easy to use when traveling or working alone.
[Easy to use]: Just open the back cover, install a 9v battery (this product does not include the battery), then place the alarm behind any door (home, hotel, etc.) and turn the switch on when you are traveling or need to Ideal for carrying around in an unfamiliar environment.
Package includes: 2 x Door stop alarms (9v battery is not included.)