Welcome to the New Keller Supply Website - Our new website is now live. Enjoy improved product search, enhanced navigation, and an upgraded online experience. We welcome your feedback as you explore the new site.
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