The Model AUR890F and Model AUR890G Burner Controllers were developed to replace the Model RA890 and are designed for batch operation of combustion equipment (At least one cycle start and stop in each 24 hour period). In combination with a Model AUD100 Advanced Ultraviolet Flame Detector or Flame Rod assembly, the Model AUR890 automatically executes ignition, flame monitoring, and fuel shutoff for on/off controlled gas burners or oil burners. UL/FM Approved models available.