AAT POWERED MOBILITY STAIRCLIMBER was developed to overcome multiple stairway situations. It can be used to transport a person in their own wheelchair, or, with the seating system provided, to transport someone with impaired mobility who doesn’t have a chair. The continually adjustable climbing speed allows it to be used on difficult staircases and enables the stair climber to be individually adapted to each transport situation The operation of the S-Max Sella stair climber is very easy, allowing an operator to handle the device safely after a short period of training.