Reliance Water Heater Company Liquid Propane Gas Valve 100112338 old pn 9007890005 - manufactured by Resideo for AO Smith Brands;

The electronic gas control valve incorporates an LED status indicator that monitors system operation and service diagnostics. Gas control located within hot water heater uses a thermopile to generate the power needed to operate the electronic gas control without requiring an external power source. This product has been certified by a third party to be compliant with the "Safe Drinking Water Act" requirements for low lead in potable (human consumption - drinking and cooking) and non-potable water applications (non-human consumption). Thermostat is compatible with all A.O. Smith branded heaters including A.O. Smith, State Water Heaters, American Water Heater, and Reliance.