Gas control thermostat powered by 750 millivolt generation. LED indicator blinks during normal operation. Accuracy integral ignitor. Fits only 300 Series Natual gas standard residential models with Resideo gas control valves only. Original part for: A.O. Smith, A.O. Smith Canada, American, GSW, John Wood, Kenmore, Lochinvar, Maytag, Mor-Flo, Penfield, Reliance, Sears, State Industries, U.S. Craftmaster, Whirlpool. Fits: Bradford White, General Electric, Rheem, Richmond, Ruud
