... 2.High microstep,high torque 3.broad voltae range 4.wide output current range:0.3-8V Characteristics:1. ... ~50VDC2.Output current:1.3A-4.5A3.Mircostepping:1(1.8º),1/2,1/4,1/8,1/16,1/ ... ,error connect protect5.Dimensions:118mm×76mm×33mm6.Weight:<300g.7.Working environment:Temperature-15~40°C Humidity<90%.I/O ... a jump5,installation dimension Stepping motor driver,1.3A-4.5A,high quality and reasonable price