... DIR-:Stepping motor direction input, voltage level touched off,high towards, low reverse7,ENA+,ENA-: motor free . ... enter half current state of automatically for electricity saving, the phase current of the winding of the electric3, The ... and output is small.Please check whether the wiring of electrical machinery is a mistakeSwitch Choice: (“ON=0, ... motor driver,1.3A-4.5A,high quality and reasonable price