... ~50VDC2.Output current:1.3A-4.5A3.Mircostepping:1(1.8º),1/2,1/4,1/8,1/16,1/32,1/64,1/128,1/2561/5,1/10,1/25,1/50,1/125,1/2504.Protect form ... , low reverse7,ENA+,ENA-: motor free .NOTE:1, When ambient temperature is high or working current over 2.7A, fix the module ... on big metal shell , or use axle flows fan dispels the heat, to make the ...