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UER Forum > Archived UE Encyclopedia > Door alarm (Viewed 127 times)
Jedstah 


Location: Moncton, NB, CanaDUH.
Gender: Male


i never thought id see the day, when church kids choose the hardcore way.

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Door alarm
< on 1/20/2004 11:22 PM >
Posted on Forum: UER Forum
 
see alarm
see motion sensor

Door alarms are often triggered via magnetic sensors. One half attached to the door, the other to the frame. These are sometimes visible on the door, and sometimes not. Oftentimes the presence of wires at the top of the door (often through the frame) indicates the presence of a door alarm.

The door alarm in this picture is non-functional, but the general construction of door alarms can easily be inferred from it.

9855.jpg (48 kb, 500x375)
click to view


[last edit 1/20/2004 11:22 PM by Frozen - edited 4 times]

You shake my hand, say “pleased to meet you.” Look me in the eye, I don’t believe you. TUI, as long as I’m still alive. I live despite you. Realize I’m not one of your kind, I’m nothing like you.
UER Forum > Archived UE Encyclopedia > Door alarm (Viewed 127 times)



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