Description: Model: DM556 Power: 200KW Rated voltage: 20-50V Speed response frequency: 200KHZ Applicable motor: 57/86 stepper motor Professional two-phase stepper motor drive Positive and negative reversal control can be realized. Input voltage anti-reverse protection, over-current over-current protection Specification: Material: Aluminum + plastic Size:118x85x34mm/4.65*3.35*1.34inch Package Includes: 1x Stepper Motor Driver