... ,1/16,1/32,1/64,1/128,1/2561/5,1/10,1/25,1/50,1/125,1/2504 ... ,DIR +,DIR-:Stepping motor direction input, voltage level touched off,high towards, low reverse7,ENA+,ENA-: motor free .NOTE:1, ... SW101010101SW200110011SW300001111Current(A)1.31.82.32.73.23.74.24.5 3,Full current or half current choice:SW4:0=Full ... jump5,installation dimension Stepping motor driver,1.3A-4.5A,high quality and reasonable price