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CCTV camera in Dhaka city
Md A
Md A May 08, 2013
CCTV camera in Dhaka city

I've seen these sensors...

Often 10
Occasionally 2
Rarely 0
Never 0
What is it? 0
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Similar Photos: This would be really cool! I found it online, anyone ever heard of it? Dance mat with sensors One of the most common sensor, it's a motion sensor. Commonly used for automatic doors.

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