... +,DIR-:Stepping motor direction input, voltage level touched off,high towards, low reverse7,ENA+,ENA-: motor free .NOTE ... long time.2, Half current automatically: if control machine not send out signal in half second, driver enter ... : When the double-phase electrical machinery is connected with driver , users are apt to connect the phase ... Stepping motor driver,1.3A-4.5A,high quality and reasonable price