Door Stop Alarm, Stopper with 120DB Security Floor Wedge Doorstop for Travel Apartment Home House (Pack of 4)

Dual Function: When the power is in "on" status, it will make extremely loud 120db alarm to be used as door stop alarm; when the power is in "off" status, it can be used as damping rubber door stopper. 3 Sensitivity Levels: Low - Medium - High, with an adjustable switch on the side. H level is the highest sensitive level to trigger 120db alarm.An easy way to make the intruder run as fast as he can! Portable Design: Light weight, small size, easy to pack and take.You can carry it as a security measure for your trip. Small but very effective! Easy to Use: Powered by 9V battery, no mess cable. One piece can be used for a year under normal circumstances. Simply place the alarm behind door.Battery not included. Additional Security: Place the alarm behind the door that you want to be alerted in home, dormitory, hotel or motel room while you are sleeping., Manufacturer: Monsin