120 dB Door Stop Alarm

This door stopper security alarm can be a door stop alarm or a door stopper, when the alarm being triggered and the meantime it will keep the intruder outdoor from you, it’s safe. If the door is installed very high and far from the ground,please put a soft thing under the door stopper. If the door stopper alarm in “off “status,it can be used as common damping rubber base door wedge and hold door in open position,it will not have any loud alarm sound.It has 3 sensitivity levels : Low – Medium – High with an adjustable sensitivity switch on the side.H level is the most sensitive level that vibration will trigger an alarm. No wiring needed, just put 9v battery in and switch the button on the back to “ON” then it can works. Battery not included.