Use this DSAL-2 125db door stop alarm to block a door from being opened. if anyone tries to open the door, this alarm will sound. There is also a movement sensor with adjustable sensitivity to activate the alarm if tampered with. An on/off switch allows the alarm to be turned off so that it doesn't go off in your luggage. Uses one 9-volt battery (not included).

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Image(s):    Door Stop Alarm