... .wide output current range:0.3-8V Characteristics:1.DC power input type:24V~50VDC2.Output current:1.3A-4.5A3.Mircostepping ... -15~40°C Humidity<90%.I/O Ports:1, VCC+:DC power positive poleNote:Must guard against exceeding 50V,so as ... not to damage the module2,GND:DC power cathode3,A+,A-:Stepping motor one winding4,B+,B ...