Microstepping drive, 3.5A per phase, 2-phase bipolar PWM controlled current. Requires a 12-42 VDC power supply and has optically isolated digital inputs for step, direction, and enable. 1/2, 1/5, 1/10, and 1/50 step modes, 0.4-3.5A/phase, idle current cutback, and test mode are all dipswitch selectable (no software required).

Manufacturer Part Number: STP-DRV-4035