This automatic voltage regulator is used to control the output of gasoline electric generator It is connected to the generator with several wires to stabilize the voltage By increasing or decreasing the generator control voltage, the output voltage of the generator increases or decreases accordingly The voltage regulator is suitable for 6.5KW 7KW 8.5KW 2-phase 6-wire generators It has a aluminum housing which is rust resistant and can offer a good protection, Manufacturer: Regun