1. Fully support of MACH3 and other computer software support for parallel port control.
2. USB power supply and peripherals powered phase separation to protect computer security.
3. Peripheral wide voltage input,12-24V, and anti-reverse function.
4. All of the input signal, all the light lotus isolated, which can be accessed emergency stop

     on the knife,the limit to protect computer security.
5. All the way to the relay output port, control spindle switch. Output port P17 mouth.
6. All the way through the optocoupler isolated 0-10V analog voltage output can be controlled

     with the corresponding analog interface converter to control the spindle speed. Output port     P1 port.
7. Open all 17 ports, which can be accessed with the optocoupler drive, 5-axis stepper motor

     can be controlled.
8. P1 as PWM outputs can be controlled with optocoupler input spindle governor.
9. Can be accessed by a common cathode or common anode input level to 5V drive.