Features 1、24V‑50V DC power supply, 8 level adjustable output current 1.0A‑5.6A. 2、Bipolar constant current PWM drive output. 3、Optical isolation input signal, pulse response frequency up to 200kHz. 4、Strong anti‑interference capability, achieve high precision positioning in complicated environment. 5、Low speed zero vibration, and low noise. Specification Features: 1. 24V-50V DC power supply, 8 level adjustable output current 1.0A-5.6A. 2. Bipolar constant current PWM drive output. 3. Optical isolation input signal, pulse response frequency up to 200kHz. 4. Strong anti-interference capability, achieve high precision positioning in complicated environment. 5. Low speed zero vibration, and low noise. 6. Fit for 42/57 stepper motor and widely used in automatic packaging machine, engraving machine and other automation equipments. Specification: Model: DM556 Application: 42/57 stepper motor Input voltage: DC 20-50V Output current: 1.0-5.6A, 8 level adjustable, 0.5A resolution Drive method: Bipolar constant current PWM drive Pulse response frequency: 200kHz(Max) Insulation resistance: >500MΩ Insulation strength: 500V/min Dimensions: 118*75.5*34mm / 4.6*3.0*1.3in Weight: Approx. 270g / 9.5oz Package list: 1 * Steeper Motor Driver Package List