Knowledge Stew
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Knowledge Stew

What is the Tiny Hole in an Elevator Door Used For?

While you won’t see it on every elevator door, many of them have one tiny hole in one panel of the door. It is reasonable to assume that since it resembles a peephole like in a regular door, this would be what it is so that someone on the outside could look in on passengers of the elevator for some reason. This would not be correct, but that tiny hole in elevator doors does have an important job.

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