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When an RV furnace or gas appliance won't hold a flame, the ignitor board is often the culprit. This small universal board from Dinosaur Electronics replaces failing controls with dual flame-sense inputs and a built-in voltage regulator that cleans up the incoming 12-volt supply for more reliable operation.
A handy troubleshooting aid as much as a replacement part - the LED alone can save a lot of guesswork on a cold night.