HY CNC Single Axis TB6600 0.2 - 5A Two Phase Hybrid Stepper Motor Driver Controller High performance, cost-effective. Automatic idle-current reduction. Supply voltage up to 50V DC. Output current up to 5.0A. Suitable for 2-phase and 4-phase motors. High speed optoelectronic isolation signal input.Single-chip PWM bipolar sinusoidal chopper ensures low vibration and high efficiency. 1, 2, 4 (New Mode), 8, 16 adjustable microstep control, motors run more precisely and smoothly. Equipped with the 3rd generation of breakout board, display panel and control pad to control the motor manually. Overload, overcurrent, overheat, overvoltage and undervoltage protection to avoid damaging your computer and devices. Cooling Aluminium Box Design for Cooling, and protect the driver board from being damaged by dirt, dust or other liquids