Features Versatile Compatibility: Compatible with various versions of MACH3 software, including the latest version, ensuring seamless integration with your CNC system. Enhanced Safety Features: All input signals are isolated by optical diaphr, providing a secure connection for emergency stop, tool setting, limit position, and 0 return, safeguarding your computer system from potential risks. Precision Speed Control: One-way optocoupler-isolated 0-10V analog voltage output allows precise control of the inverter input to manage spindle speed, ensuring accuracy and efficiency in your machining operations. PWM Output Capability: Equipped with PWM output (5V level) for seamless connection to the spindle governor, providing reliable control of spindle speed for optimal performance. Flexible Output Ports: Features 4 output ports (5V level) for easy connection to photocoupler relay modules, enabling convenient control of water cooling, spray systems, and more, enhancing the versatility of your CNC setup. Specification: Input Voltage:12~24V Handwheel Working Voltage:5V Fit for Windows XP Fit for Windows 7 Fit for Windows 8 Fit for Windows 10 Fit for 64 bit System and Laptop,Tablet Package List: 1 x Board 1 x USB Cord 1 x Handwheel without Emergency Stop 1 x Hook 1 x Optical Disc Package List