Which switch is used to bypass regular controls in an elevator system?

The override switch is specifically designed to bypass regular controls in an elevator system. This switch allows authorized personnel, such as maintenance or emergency responders, to take control of the elevator and operate it outside of its normal operational parameters. This can be essential during emergencies, such as when the elevator needs to be manually controlled to assist trapped passengers or to facilitate maintenance work without interruptions from the normal control logic.

In contrast, other switches serve distinct purposes: an emergency stop is designed to halt the elevator's movement entirely in emergencies, ensuring safety; the landing switch typically signals the elevator's position at each floor, preventing operation unless the elevator is aligned with a landing; and the service switch is often utilized to put the elevator into a maintenance mode, allowing regular functionality to be limited without fully bypassing the controls like the override switch would.