... +,DIR-:Stepping motor direction input, voltage level touched off,high towards, low reverse7,ENA+,ENA-: motor free .NOTE: ... 1, When ambient temperature is high or working current over 2.7A, fix the module ... phase current of the winding of the electric3, The fault phase is protected : When the double-phase electrical ... Stepping motor driver,1.3A-4.5A,high quality and reasonable price