[Dual
Function]: Works as both a door stop alarm and a door stopper. Its high-damping rubber bearing prevents the door from sliding and assists in keeping intruders out.
[3 Levels of Sensitivity]: High, Medium, and Low sensitivity options, based on the gap between the door and the door stop alarm.
[Loud Alarm]: Produces a very loud 120dB sound that can effectively deter someone.
Weight: 4.5 oz.
[Powered by 9V Battery]: Runs on a 9V battery; one unit lasts up to a year under normal conditions.
(Note: Battery not included. )
[Easy to Use]: No setup needed. Simply position the alarm behind any door (home, hotel, etc. )