Upgraded Door Stopper Security Alarm, Portable 120DB Entrance Alert Door Stop Alarm for Travel Home Apartment House, Hotel, Office (2 Packs)

Easy and Practical DIY InstallationInstall the battery,place it under the door, the door stopper alarm in on status, when door pressure is applied, the door alarm will be triggered while make extremely loud 120db alarm;The door stopper alarm in off status,it can be used as common damping rubber base door wedge, hold door in open position, no any loud alarm sound.The Door Stop Alarm offers a practical, inexpensive means to help protect yourself and safeguard your belongings.The Dorm Stop Alarm is battery operated with a built in siren. • 【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】: Hige-Midium- 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. Very practical. (Note: Battery not include) • 【Easy to Use】: NO installation required, Simply place the alarm behind any door (home, hotel, etc). very convenient to take with you when travel or stay indoor alone. A really must have around you.