Genuine brand with Leadshine label Nema 23 (57) stepper motor driver Nema 34 (86) https://seller.tokopedia.com/manage-product?keyword=driver#:~:text=DM860H%20Stepper%20Motor%20Driver%207.2A%20With%20Cooler%20Fan nique features DM542 C LEADSHINE for high requirement applications Extremely cost-effective Good high speed performance Supply voltage up to +50VDC (24vdc recommended) Output current up to 4.2A Pulse frequency up to 300 KHz Automatic idle-current reduction 3-state current control technology Self-adjustment technology Pure-sinusoidal current control technology TTL compatible and optically isolated input 15 selectable resolutions in decimal and binary, up to 25,600 steps/rev Suitable for 2-phase and 4-phase motors DIP switch current setting with 8 different values Support PUL/DIR and CW/CCW modes Short-voltage, over-voltage, over-current protections Small size (118x75.5x33mm)