FUNCTION:
1.Can be used as a door stop alarm and door stopper, It's with silicone material can gripping on any surface to prevent the door sliding and prevent the bad guys into.
2.Place the alarm behind any inner door,then put it in "on" status,5 seconds later, will enter the working sensor state. when door pressure is applied or vibration, the door alarm will be triggered while make extremely loud alarm, helps wake or alert homeowner. The alarm sounds will stop after 30 seconds.