The STS-H142-1770 is a NEMA 42 stepper motor drive set. The HS4212 stepper motor has the holding torque of 1770 oz-in (12.5 Nm). The DM1182 stepper drive is DSP-based, and can be line powered with direct 110/120 VAC input without the need of a power supply. This stepper motor drive set is in industrial quality, with high precision. It can offer excellent performance in low motor heating, low noise, and extra smooth motor movement.