Otis Aut-O-Safe is an elevator emergency return unit, used on most currently made Otis hydraulic elevators. The unit has a battery in it. If the power goes out, the battery powers the elevator, so the elevator can move. Then, the elevator goes down to the lowest landing, and will not go back up again. The doors will open, then passengers can exit. The doors then close. The door open button in the elevator is still enabled so no passengers get trapped in the elevator. This emergency return unit was made from around 1990-present.


Brand New Otis Hydraulic Elevator Machine Room -- Inside Look!03:02

Brand New Otis Hydraulic Elevator Machine Room -- Inside Look!

Otis Aut-O-Safe emergency return unit (the blue box on the wall in the machine room)

Ad blocker interference detected!

Wikia is a free-to-use site that makes money from advertising. We have a modified experience for viewers using ad blockers

Wikia is not accessible if you’ve made further modifications. Remove the custom ad blocker rule(s) and the page will load as expected.