For use with Kohler Invigoration Series steam generators between 5 and 30 kilowatts;Adjustable temperature settings between 90 DegreeF and 125 DegreeF;20-minute safety shutoff;Box includes steam controller with built-in temperature sensor;Requires Invigoration Series K-32309 linear steam head or K-32310 square steam head (sold separately);Not compatible with other manufacturers' steam generators