Rinnai RL94eN Natural Gas Tankless Water Heater, 9.4 Gallons Per Minute - Outdoor Not fabric Imported 9,900  199,000 BTU;Wifi Capable Comes standard with MC-91-1US Digital Controller with Error Code Indicator 83% Thermal Efficiency Residential Temperature Settings: 98F - 140F Commercial Temperature Settings: 98F - 185F (commercial controller must be purchased separately)