Item Type: Micro Step Driver Material: ABS Humidity: 40-90%RH Vibration: 10-55Hz/0.15mm Storage Temperature: -2065 Input Voltage: DC 9-42V Cooling Method: Natural cooling or forced air cooling Signal Input: Single-ended, pulse/direction Applicable Motor: 4-wire, 6-wire and 8-wire 2-phase hybrid stepping motor with current below 4.0A and outer diameter of 39,42,57mm Applicable Equipment: Suitable for All Kinds of Small and Medium-sized Automation Equipment or instruments, such as: Engraving machine, marking machine, cutting machine, laser phototypesetting, plotter, CNC machine tool, holding device, etc. In equipment where users expect low-cost, high-current operation. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.