Features: The upgraded version of TB6600 is a driver suitable for 57/42 type two-phase hybrid-stepping motor with phase current under 4.0A. Set 7 kinds of subdivisions (1/2A/2B/4/8/16/32) through 3-bit DIP switches, and 8 gear output current (0.5A/1.0A/1.5A/2.0A/2.5A/2.8A/3.0A/3.5A). H-bridge bipolar constant current drive, low speed zero-vibration, and low noise, provide you with excellent usage effects. Large area heat sink, strong resistance to high-frequency interference, input-voltage anti reverse protection; Protection against overheating, overcurrent, and short circuit. Widely used in various small and medium-sized automation equipment and hardware,such as for engraving machine, marking machine, cutting machine, laser-phototypesetting, plotters, CNC machine tool, crystal grinding machine, automatic assembly equipment, etc. Specifications: Material: Plastic Size: Approx. 96x67.7x28.5mm/3.78x2.67x1.12" Model: TB6600 Application: for 42/57 stepper motor Input-voltage: DC9-42V Input Current: Suggested to use 5A Output Current: 0.5-4.0A Power Consumption: up to 160W Working Temperature: -10~45 Storage Temperature: -40~70 Humidity: no condensation, no water droplets Gases: combustible gases and conductive dust are prohibited Note: Please allow 0-1cm error due to manual measurement. Please allow for slight color difference due to different display resolution. Package includes: 1 Set TB6600 Digital Motor Driver