The HTP 7350P-022 Flame Rectification Probe with Gasket is a replacement safety component designed to detect the presence of combustion inside gas-fired boiler chambers. It works by sensing the electrical signal generated by the burner flame and providing verification to the boiler’s ignition control system, helping ensure proper flame operation. This probe is used with HTP Elite, Eli... https://www.partshnc.com/htp-7350p-022-flame-rectification-probe-w-gasket