Features: <br>This CNC engraving machine controller is specially designed for Mach3 system. <br> <br>Easy to use, no need to install any software or drive, connected by USB port and the cable can be stretched to about 3 meters. <br> <br>Integrated 21 function keys including emergency stop, cycle start, spindle on/off and so on. <br> <br>The exterior housing is water-resistant and can guarantee normal operation against dirty or oil. <br> <br>12*12mm buttons ensure that your finger will not interfere with the adjacent buttons. <br> <br> <br> <br>Specifications: <br>Compatibility: For Mach3 only <br>Connector: USB <br>Size: 20.5*8*2.8/8.07*3.14*1.1in <br> <br> <br>Package Includes: <br>1 x Controller<br>1、This CNC engraving machine controller is specially designed for Mach3 system <br>2、Easy to use, no need to install any software or drive, connected by USB port and the cable can be stretched to about 3 meters <br>3、Integrated 21 function keys including emergency stop, cycle start, spindle on/off and so on <br>4、The exterior housing is water-resistant and can guarantee normal operation against dirty or oil <br>5、12*12mm buttons ensure that your finger will not interfere with the adjacent buttons