Use the DOOR STOP ALARM as an entry alarm and to block a door from being opened.  If anyone tries to open the door, this 120dB alarm will sound.  Alarm stops when pressure is released from door stop plate. 

There is also a movement sensor with adjustable sensitivity that will activate the alarm if it's tampered with.  On/off switch is on the back of the alarm and includes a low battery indicator light.  Uses one 9-volt battery (not included).

Instructions:  1STDSAL-2