DM556 Digital Stepper Motor Driver 2-Phase 5 Controller for Nema 23 57mm 34 86mm Stepping Motor Replaces M556 Specification: Input power: 24 to 50V DC power supply, the capacity isn't lower than 200VA, the typical cost is DC 36V Output current: 1 to 4, eight stages adjustable, zero resolution Drive mode: dual-machine fixed current PWM power output Insulation resistance: > 500MΩ under common temperature and strain Insulation strength: 500V/min at standard temperature and pressure Cooling method: pure cooling Use occasion: keep away from dust, oil mist and corrosive fuel Use temperature: 0℃ to +50℃ Environmental humidity: <80%RH, no condensation, no frost Product size: 115*76*34mm/4*2*1" Note: 1 There may be slight size deviations due to guide measurement, diversified measuring methods and instruments 2 The picture won't replicate the particular shade of the thing due to various photographing light, perspective and display monitor 1 X Stepper Motor Driver