The SwitchSpeed™ Controller offers all of the standard functions that you\'ve come to expect from a traditional switchbox, but that is where the similarities stop. AccuAir\'s proprietary Advanced Burst-Control Technology™ allows you to choose between three different modes of adjustment; Precise / Moderate / Full Speed. The burst speeds for each of these modes are user-tunable. Although the SwitchSpeed™ does not offer preset heights like the e-Level™ Controller; it can easily be upgraded down the road. Handheld or mountable, the SwitchSpeed™ Controller gives full manual control over each Air Spring individually as well as front and rear Air Spring control in “pairs”. The “All-Down” button fully deflates the vehicle for parking at your currently selected valve speed. It includes built-in compressor control feature that is enabled once the optional tank pressure sensor is plugged in.