Step automatically stops if it strikes an obstacle Electric Step Control Unit For Lippert Kwikee Electric Steps Series Heavy Duty Electric Step With Motor Lippert Lippert 3747453 28 Series Step Assembly With Logic Control Unit And Power Switch Kit Powered Step With Motor Lippert 39 Series RV Step Assembly with Logic Control Unit and Power Switch Kit • 3724742 Product Details Mounting Type: Coach Mount Folding Type: Power Folding Number Of Steps: 1 Overall Height (IN): 10-15/16 Inch Ground Contact: No Tread Depth (IN): 10 Inch Width (IN): 23-3/4 Inch Step Rise (IN): 7 Inch Collapsed Height (IN): 4-1/4 Inch Sealed wiring connectors stand up to the elements Lippert Components Electric Switch Step Magnet - 369299 Heavy-gauge steel and black powder-coat finish for long-lasting durability