NKK Switches SmartDisplay™ S0109 Single Switch Solution Kit is designed to demonstrate the features of the Single Switch Solution. This kit is programmed to show different ways to use the single switch solution and has four potentiometers, four toggles, and four LEDs that simulate various inputs and outputs. NKK Switches SmartDisplay™ S0109 Single Switch Solution Kit can communicate to a computer thanks to the UART and USB adapter on the demo unit.