Features Automatic half current lock function to reduce motor heating when locked Built-in temperature and over current protection 5V logic signal power supply voltage regulator chip with current limiting resistor Input reverse connection protection for high voltage input Reliable and stable wiring with clear markings Specification: Item Type: Motor Controller Material: PCB Model: THB6128 Working Voltage: DC 9-36V Step Subdivision: 1, 2, 4, 8, 16, 32, 64, 128 Power Supply Current: 2A Purpose: Drive Stepper Motor Application: Stepper motor, machinery manufacturing, automatic equipment, equipment maintenance Package List:1 x Stepper Motor Driver1 x Radiating Plate Package List 1 x Stepper Motor Driver 1 x Radiating Plate