... consumption 3.High microstep,high torque 4.low noise,broad voltae range, Characteristics:1.DC power input type ... fan dispels the heat, to make the module run reliably for a long time. 2, Half current automatically: if ... half second, driver enter half current state of automatically for electricity saving, the phase current of the winding of ... -bit DSP with high performance, high torque, and low noise