I think the poster who said 'alarm system' nailed it. They just
refreshed the system at work, and all the enclosures and large conduit
runs are fire engine red. Including the screws holding the strapping and
Red screws in general are a sign of danger in millions of products for
many years. I know of them being used back around 1953, not sure how
much further back the practice goes. If you need to take something
apart, remove all but the red screws first and see if it comes apart far
enough without springs and things flying across the room.
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