... 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 ... .Weight:<300g.7.Working environment:Temperature-15~40°C Humidity<90%.I/O Ports:1, VCC+:DC power positive poleNote:Must guard against ... ,GND:DC power cathode3,A+,A-:Stepping motor one winding4,B+,B-:Stepping motor other winding5,PUL+,PUL -:Stepping pulse input+5V ...