... winding5,PUL+,PUL -:Stepping pulse input+5V (Rising edge effective , rising edge duration >10μS)6,DIR +,DIR-:Stepping ... motor direction input, voltage level touched off,high towards, low ... motor free .NOTE:1, When ambient temperature is high or working current over 2.7A, fix the module ... Stepping motor driver,1.3A-4.5A,high quality and reasonable price