Features Built-in 5V logic signal power supply voltage regulator chip and a current limiting resistor added. The chip heating input reverse connection protection when reducing the high voltage input. The wiring of this brushless motor controller is reasonable, the marking is clear and reliable and stable. The chip of this brushless motor controller has built-in temperature protection and overcurrent protection. The chip has an automatic half-current locking function, which greatly reduces the heating of the motor when locked. Specification: Item Type: Motor Controller Material: PCB Model: THB6128 Working Voltage: DC 9-36V Step division: 1, 2, 4, 8, 16, 32, 64, 128 Supply current: 2A Purpose: Stepper motor Application: stepper motor, mechanical engineering, automatic equipment, equipment maintenance Package List: 1 x Stepper Motor Driver 1 x Radiation Plate Package List 1 x Stepper Motor Driver 1 x Radiating Plate