Cadmium-Sulfide Flame Detector with 60 in. leads, Type “R” bracket and higher
sensitivity Cad Cell

On flame failure, the light sensitive cadmium sulfide cell, in conjunction
with flame sensing circuitry, causes the Protectorelay® control to shutdown
the main oil burner.
Glass-to-metal hermetic seal in plug-in cell prevents deterioration by
humidity, soot or oil fumes.
Replaceable CAD Cell