[Dual
Function]: Serves as both a door stop alarm and a door stopper. Its high-damping rubber bearing helps keep the door from sliding and discourages intruders.
[3 Levels of Sensitivity]: Offers High, Medium, and Low sensitivity settings, 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]: Requires no installation. Just place the alarm behind any door (home, hotel, etc. )