Virtually anyone can control the SC500's traction drive system, effortlessly propelling it forward at whatever speed feels comfortable and appropriate for the cleaning application. The unique multi-function display and control panel grants managers, using the yellow super user key, access to adjustable cleaning parameters. Operators, using the gray key are able to start cleaning at the beginning of their shift. They don't need to take the time to change machine settings before they start. With EcoFlex™ System which offers the flexibility to clean across the entire cleaning spectrum from green to clean. At the touch of a button one can switch from chemical free cleaning to using an ultra low dilution ration, and of course detergent can be used at full strength for the toughest of soils.