... +,DIR-:Stepping motor direction input, voltage level touched off,high towards, low reverse7,ENA+,ENA-: motor free .NOTE ... to make the module run reliably for a long time.2, Half current automatically: if control machine not ... driver enter half current state of automatically for electricity saving, the phase current of the winding of the ... Stepping motor driver,1.3A-4.5A,high quality and reasonable price