Green color represents the up direction and red color represents the down direction.It opens an inspection cabinet, turn off fans and put the elevator into special operating modes.It helps to ring the bell in case of emergency. For example being stuck, being on fire, being mauled by a bear, being melted, being sucked into another problem.It helps to stop your request. Many elevators have CCTV and an audio link to security. If you hit stop then security start talking to you to make sure you’re OK and can also see what you’re doing.
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Dwarka, Delhi