MAKE A MEME View Large Image Circuit board revealed.JPG en Passive infrared motion detector with cover removed Green arrow points to pyroelectric element approx 1/4 inch square Photographed and uploaded by me Jack LaRosa 07-27-08 PIR Passive infrared sensor
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Keywords: Circuit board revealed.JPG en Passive infrared motion detector with cover removed Green arrow points to pyroelectric element approx 1/4 inch square Photographed and uploaded by me Jack LaRosa 07-27-08 PIR Passive infrared sensor
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