What exactly do the emergency buttons in elevators do?

What exactly do the emergency buttons in elevators do?
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1 Answer

Answer :

Older elevators have an emergency button to contact the building engineer in the event of a malfunction. Newer ones have a phone you can use to call the building supervisor to tell him you're stuck and also an emergency button. The purpose is simply to alert the staff that you need assistance. Certain elevators have different functions to their emergency buttons. Some engage emergency brakes, some alert rescue/fire departments and some connect you with the maintenace department. Always check an elevator for emergency instructions.
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