Stepper Motor Driver 4A DC9-42V for 20/28 mm Stepper Motor CNC Engraving Machine:
- DC 9-42v power supply, DC12-24V power supply best.
- Controller input signal voltage 3.3-24V General.
- Output current 4.0A.
- Subdivision precision 1-32 subdivision optional.
- H bipolar constant current drive bridge.
- High speed optocoupler isolation input signal.
- Built in temperature protection and over-current protection.
- Automatic half of the flows reduce fever.
- Motor noise optimization function. - Small volume, space saving.

Stepper Motor Driver DM422 0.3-2.2A DC20-40V for 20/28 mm Stepper Motor:
- DC20-40V power supply.
- Output current 0.3-2.2A.
- Subdivision precision 1-32 subdivision optional.
- H bipolar constant current drive bridge.
- High speed optocoupler isolation input signal.
- Built in temperature protection and over-current protection.
- Automatic half of the flows reduce fever.
- Motor noise optimization function. - Small volume, space saving.