Doorstop Alarm Stopper for Home Security Preventing intrusion of strangersDescriptions:Use this Security Doorstop Alarm to block a door from being opened. if anyone tries to open the door， this alarm will sound. There is also a movement sensor with adjustable sensitivity. An on / off switch allows the alarm to be turned off so that it doesn't sound in your luggage. Special design for use at home， office and hotel rooms.Features:Wedge-shape design to fit anyheight's door.Adjustable High-Medium-Low sensitivity.No installation required， easy for travelers to carry.120 dB high-pitched continuous siren when activated.Can be used as a door Stopper when power switch is turned off.Power by one 9v battery， no wiring.Ensures your safe and peace mind at home or when traveling.Specifications:Power:9V (6F22) battery(Not included)Color: Black and SilverWeright: about 105gPackage Includes1* Doorstop Alarm