... High microstep,high torque 3.broad voltae range 4.wide output current range:0.3-8V Characteristics:1.DC power input type:24V ... +,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 ... motor driver,1.3A-4.5A,high quality and reasonable price