Motor Speed Controllers, Upgrade Version 4. 0A 42VDC 32 Subdivision Stepper Motor Driver for Woman for CNC Router for Current Limit

9V 42V DC power supply, H bridge bipolar constant phase flowing drive Provide 6 seed modes up to 32 segments Input signal is high speed optical isolation, standard common anode single pulse interface, offline hold function Semi closed chassis for more demanding environments, provide energy semi automatic current locking Built in thermal protection and overcurrent protection