Consists of CNC 300 Control, Backgauge Cable (MTC), All Relay Board, Relay Board Cable, Linear Scale Cable, Top Reference Switch, and Auto Advance Switch.CNC 300 is a control for Automec backgauges that can be programmed as simply as the CNC 150 or it can be programmed to use an array of sophisticated functions. CNC 300 will control any of the Automec backgauge configurations as either a 1-axis (backgauge), 2-axis (ram control) or 3-axis (programmable gauge bar height). This control carries a 2 year warranty.