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sandipan S
sandipan S May 06, 2013
Better Life With Better Ads.

I've seen these sensors...

Often 2
Occasionally 2
Rarely 2
Never 1
What is it? 2
1 Comment     9 Tags
Similar Photos: It's a movement sensor so the light only operates when someone needs it. Used to reduce energy consumption in buildings. Public parking at the Chinook Mall in Calgary has sensors that turns the light green when the stall is vacant: safety up, emissions down. Hole Punch Binder

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