Shows reliably whether the heater is still igniting or is already running. The remote ignition indicator visualises every ignition spark with a red lamp that flashes during the ignition process. When the flame appears, the lamp goes out.
A convenient option for checking the status of the heater, especially for older people. Also suitable if the inspection glass is dirty after long use and the flame is difficult to see clearly. Suitable only for S heaters with auto ignitor, not with piezo ignitor.