... DC power input type:24V~50VDC2.Output current:1.3A-4.5A3.Mircostepping:1(1.8º),1/2, ... +,DIR-:Stepping motor direction input, voltage level touched off,high towards, low reverse7,ENA+,ENA-: motor free .NOTE:1 ... , When ambient temperature is high or working current over 2.7A, fix the module ... jump5,installation dimension Stepping motor driver,1.3A-4.5A,high quality and reasonable price