How big of hole?

mkacala697

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working on my first cam and i planned on mounting the pir inside the box behind a piece of glass.  How bog of hole should i make?  full size of lense?  half inch?
 



glen71

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mkacala697 - I'm building my first one also, but I think I read that the PIR won't work through glass. I am sure someone else will comment. Good luck!
 

Richard Webb

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glen71 - a 5/8" hole if you have the Radio Shack PIR, and no glass in front of the fresnal lens.
 

wvhunter

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As Richard said don't use glass in front of the lens.  I use a RS PIR and a 3/4 inch hole which seems to work very well.
 


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