Kwikee Automatic Electric Single Step. Kwikee 12-volt automatic steps are designed to take the work out of entering or exiting from recreational vehicles. Just open the door, the step goes down and locks; close the door, the step goes up and locks. An automatic safety stops the extension or retraction if the step meets resistance. The engine does not have to be running to activate the step. When in the down position, the platform is lighted, and the long-lasting anti-skid top provides for maximum safety. The power switch allows the step to be locked in either the open or closed position, whether the door is open or closed. Automatically retracts when the ignition is turned on. Step features rugged, welded steel construction with sealed electronic control. Easy to install, for simple, trouble-free operation. Durable powder coated finish. This series has been re-designed to increase performance, reliability, and longevity of step operation. Series 28 (One Step) Specifications: Extended: 24-1/4 inch W x 21-5/16 inch D x 9-3/8 inch H; Retracted: 24-1/4 inch W x 16-5/16 inch D x 5-7/8 inch H.