This package comes with everything you need to wirelessly control you load-leveling system. Installation requires no wires to be ran into your cab, and a wireless handhelp unit makes for convenient operation inside or outside of the vehicle. Thehandhelp unit is only about the size of a garage door opener and very easy to use. This "wireless air" kit controls two air bags independently for maximum control. Set your most frequently used pressures and switch easily between them with two user-defined memory buttons. With these advanced diagnostic controls, you never have to worry about your system malfunctioning. This kit includes a high quality Air Lift compressor, inflation/deflation module, and a wireless remote control. This revolutionary air control system makes controlling air helper springs convenient and worry free.