Description Dual Function: This door stopper alarm wedge door alarm has door stop and door stop alarm functions. When someone breaks into your house, hotel, apartment, villa or office, a door alarm will go off when the burglar pushes the door to protect your house, hotel, apartment, villa, office security and personal safety. br The sound is very loud: 120 dB noise doorstop door alarm wedge is unbearable sound and it is loud. You can easily wake up the homeowner, alert neighbors and deter intruders. Easy installation: no wiring required. Just insert the 9V battery and turn the button on the back to ON to work normally. The base is made of synthetic rubber to prevent the alarm from slipping. Lightweight and easy to carry: Each plug weighs only 95 grams (excluding battery and packaging), and is great for travel or overnight in an unfamiliar environment easy to carry. 3 Sensitivity Bars: There is an adjustable sensitivity switch on the side, easy to change the mode of the doorstop alarm wedge. Product Description This door wedge is easy to put on closed doors. An alarm goes off when the door is opened, alerting you to a possible security breach. Door stop alarm and doorstop keep burglars out and prevent the doorknob from hitting the wall. Note: 1. Please turn on the power switch after inserting the battery well and insert then the doorstop under the door. 2. If the door will be mounted very high and far from the ground, please put a soft object under the doorstop. Features: High Quality: Off high-damping rubber and abdominal muscles, very comfortable to use. Loud alarm: 120dB loud alarm sound can scare intruders. Portable alarm, 3 levels of sensitivity: Low - Medium - High, with an adjustable sensitivity switch on the side. Easy Installation: Portable and easy way to travel or work alone. Widely used: Can be used in home, dorm, office hotel, motel and more. Specification: Powered by: 9V battery (not included g included) Item Size: 5.5 x 1.8 x 1.5 inch Single Weight: 0.28 lb. Package Includes: 2 x Door Stop Alarm (9V battery is not included.)