The Resideo Q313A1188 Thermopile Generator is a 750 millivolt power source designed for standing pilot gas heating systems. It works by converting heat from the pilot flame into electrical energy to operate gas valves and safety controls without external power. Commonly used in gas furnaces, boilers, wall heaters, fireplaces, and space heaters, this thermopile ensures consistent ignit... https://www.partshnc.com/q313a1188-resideo-750mv-thermopile-gen-35-lead