1、Premium Control: The 2 phase servo motor controller supports on and off control, and the drive current is 1-4.5A per phase, 8 level adjustable. 2、Good Protection: Designed to have overcurrent protection, overvoltage protection, undervoltage protection, phase error protection, encoder error protection, position error protection. 3、Wide in Fitting: Applicable to DC 24-50V and AC 20-40V, the stepper motor driver can be widely applied on 42 step, 57 step and 86 step motors. 4、Reliable to Use: Low in vibration, noise and temperature rise, the stepper driver ensures quick response and highly stable working performance. 5、Simple Installation: Comes with a compact size and a light weight as well, the stepper motor controller is very convenient to install in minutes. 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.