Features • Designed for Mach3 Compatibility - This CNC engraving machine controller seamlessly integrates with the Mach3 system for efficient operation without complications • Plug-and-Play USB Connection - Enjoy hassle-free setup with no software installation needed; the USB cable stretches up to 3 meters for flexible positioning • 21 Integrated Function Keys - Equipped with essential functions like emergency stop and spindle control, this manual controller enhances productivity and safety • Water-Resistant Housing - The durable exterior protects against dirt and oil, ensuring reliable performance in various working environments • Precision Button Design - Featuring 12x12mm buttons for easy access, reducing the risk of accidental presses for a smoother engraving experience Features: 1、This CNC engraving machine controller is specially designed for Mach3 system 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 3、Integrated 21 function keys including emergency stop, cycle start, spindle on/off and so on 4、The exterior housing is water-resistant and can guarantee normal against dirty or oil 5、12*12mm buttons ensure that your finger will not interfere with the adjacent buttons Specification: Features: This CNC engraving machine controller is specially designed for Mach3 system. 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. Integrated 21 function keys including emergency stop, cycle start, spindle on/off and so on. The exterior housing is water-resistant and can guarantee normal against dirty or oil. 12*12mm buttons ensure that your finger will not interfere with the adjacent buttons. Specification: Compatibility: For Mach3 only Connector: USB Size: 20.5*8*2.8/8.07*3.14*1.1in Package Includes: 1 x Controller Package List