[Dual
Function]: Can serve as both a door stop alarm and a door stopper. Its high-damping rubber bearing helps prevent the door from sliding and discourages intruders.
[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 shrill that can effectively startle someone away.
Weight: 4.5 oz.
[Powered by 9V Battery]: Operates on a 9V battery; a single unit can last up to a year under normal conditions.
(Note: Battery not included) [Easy to
Use]: No installation needed. Simply place the alarm behind any door (home, hotel, etc. )