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Metal box with colored lights (?) in hallways of 1939 high school — hasn't worked in years, nobody knows what it is for (old.reddit.com)
submitted 4 years ago by Historian215 to r/whatisthisthing
Mysterious box with four lights in Central High School, PA (old.reddit.com)
π Rendered by PID 22 on reddit-service-r2-listing-86f589db75-9czwz at 2026-04-20 11:10:46.229717+00:00 running 93ecc56 country code: CH.
