Features: 1. Offline system, no computer, no other control equipment 2. Simultaneously control the operation of 4 stepping motors 3. With 15 input interfaces, including limit emergency stop and other functions. 4. With 4 programmable output interfaces, including water cooled, fog cooled and other controlled peripherals. 5. Spindle speed adjustment VSO mode (0-10V) dual mode. 6. Independent design system software. 7. USB interface, support for common U disk system. 8. DCDC electrical isolation 9. Power supply requirements: 18-32VDC1A DC power supply 10. Up to 500K stepper motor control pulse output, suitable for most machine system needs. 11. Support for standard MPG. 12. Support standard G code system. 13. Embedded housing design for easy installation on any cabinet panel. 14. Integrated power supply stabilization system can resist electromagnetic interference of general spindle motor. 15. High-speed output interface chip that provides sufficient current and pulse frequency signal output. 16. Industrial-grade master chip to improve system stability. 17. Support breakpoint saving. Save power at any time. It can save the breakpoint, can continue processing after restarting 18. Support automatic tool setting, convenient and fast 19. Online reading technology, support for large-capacity U disk, support for large G code files, files of any size, can be read in seconds. Specification: Condition: 100% Brand New Working Voltage: 5V Output Pulse: 100PPR Weight: Approx. 1430g / 50.4oz Package List: 1 * DDCSV2.1 Offline CNC System Controller 1 * Electronic CNC Handwheel 1 * USB Flash Drives 1 * USB Extension Cable 2 * Fixing Accessories 2 * Installing Pins Note: New-style and old-style are shipped randomly .