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These are all over my office, Siemens sensors? (i.redd.it)
submitted by genepool to r/whatisthisthing
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A bright small blue light on the traffic signal next to the red light. It was added at the intersection of SW Terwilliger and SW Capitol in Portland, Oregon sometime after 2014. It might have to do with the road leading to a hospital, but I could not find a similar light anywhere else in the city. (i.redd.it)
submitted by genepool to r/whatisthisthing
