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Fire sensor
Barbara P9
Barbara P9 May 06, 2013
Fire sensor

I've seen these sensors...

Often 7
Occasionally 2
Rarely 0
Never 0
What is it? 0
1 Comment     9 Tags
Similar Photos: Toilets that automatically change the cover.  They are at Chicago international airport! This sensor is being placed near the windows to sense the vehicles going by. Motion sensors track crowd density at Canal Park in Washington D.C. and glows brighter when more people are present.

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