The controller simplifies control of proportional solenoids by supplying a current proportional to an input control (0-5 VDC or 10K potentiometer or 4-20 mA). It accepts power supply voltages from 9 to 32 VDC. This linear solenoid driver utilizes high frequency switching output (PWM) to provide a DC current output. Maximum current output is 2 Amps. The user can adjust maximum and minimum current to suit the application.