This module is based on L298N, high voltage, high current dual full-bridge driver which can be used to drive a DC motor and stepper motor, relay coil inductive load; using standard logic level signal control; having two enable control end to allow or prohibit the work has a logic device power supply input terminal, in the case regardless of the input signal affect the internal logic circuit portion to operate at a low voltage; can be an external sense resistor, the amount of change in feedback to the control circuit.