The e-Level management package kit includes everything you will need to get your ONAIR kit on the road. With our E-Level package you will now have three programable heights. You get a low height, ride height, full high and also all the way down functions with a button press away. You also have ride height on start function, which goes to your selected height when turning on your car. Your three programmed presets will always stay at the target height, no need to adjust your height for passengers, that will be the job of RideMonitor Mode. RideMonitor helps you keep your selected height at that height no matter what weight or road changes occur. Each E-Level system will calibrate when installed and will also learn how your air suspension behaves, thus giving you the best ride on air. This package also includes VIAR 400C compressor and a 5 Gallon Aluminum Tank.