1Suitable for Nema 17, Nema 23, Nema34 stepper motorand 2phase mixing stepper motors(outer diameter: 42, 57, 86mm) 2This high subdivision driver is suitable for high subdivision motor. Suitable for 42,57,86 type 2& 8209;phase 4& 8209;phase (4& 8209;wire, 6& 8209;wire, 8& 8209;wire) stepper motor 3PWM current control guarantee the stable operation of motor, suitable for engraving machine, CNC, etc. 4The product is made of high class materials of good quality, which possess stable working performance 5The stepper motor driver have stable structure and high working efficiency, you can use with confidence Item Type: Microstep driver Model: DM542 Color: Black Power Supply: DC 24-50V (36V recommended) Maximum Current: 4.2A Output Phase Current: 1.0A-4.2A Logic Input Current: 8-20mA (10mA recommended) Step Pulse Response Frequency: 0-200KHz Operating Temperature: 0 to +50 1 x Microstep Driver