Features Excellent workmanship: This motor driver is well-made and can perfectly replace the old one Fast speed: This high-speed response micro-stepping motor, the speed is doubled than the analog chip Pulse signal: +12V/+24V (cross resistance is required to limit the current), input voltage: AC18~80V, DC24~110V, hole distance: 138mm/5.43in Aluminum alloy material: This motor driver uses aluminum alloy material, pulse width <2.5us, pulse frequency response; 250KHz Safe operation: This motor driver has over-current, over-voltage, under-voltage, and short-circuit protection to ensure safe operation Feature: 1. High‑speed response microstepper moter, the speed is doubled compared with analog chip. 2. The DM860 is the latest chip for DSP driver that features of high performance, high turning moment, and low noise. 3. Overcurrent, overvoltage, undervoltage, short circuit protection to insure safety operation. 4. With great workmanship, this motor driver can perfect replace the old one. 5. Apply in dispensing machine, woodworking machine, welding machine, screw machine, winding machine, placement machine, packaging machine, engraving machine , LED, electronic equipment, etc. Specification: Conditon: 100% Brand New Item Type: Stepper Motor Driver Material: Aluminium Alloy Color: As Pictures Shown Pulse Width: &lt;2.5us Pulse Frequency Response: 250KHz Pulse Signal: +12V/+24V (Requires Cross-Resistance to Limit Current) Input Voltage: AC18-80V, DC24-110V Hole Distance: Approx. 138mm/5.43in Package List: 1 x&nbsp;Stepper Motor Driver Package List 1 x Stepper Motor Driver