Broag Electrodes
Usually, there are two types of electrode, Ignition electrodes and flame sensing electrodes. The Ignition electrode creates the spark that starts the burner. The flame sensing electrodes are responsible for checking if there is a flame present in the burner. This is an important safety device that makes sure the boiler isn't still supplying gas without a flame.
Broag S54339 Ionisation Electrode With Gasket and Screws - Gas 110/Quinta Eco
Part No: 2202532 / MPN: S54339
RHMA S101619 TRANSFORMER IGNITION INCL. ELECTRODE IGNITION/IONISATION
Part No: 8900593 / MPN: S101619