... input type:24V~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 ... -: motor free .NOTE:1, When ambient temperature is high or working current over 2.7A, fix the module on big metal shell ... use axle flows fan dispels the heat, to make the module run reliably for a long time.2, Half current automatically ...