Use in Dometic 3850415.01 or 3850712.01. Features a built-in ignitor, 2-or 3-way operation, fused protected, with a variable temperature adjustment for those fixed "automatic" temp refrigerators. The check light comes on after each ignition try fails to sense a flame. Repeats the 3-try ignition cycle at 30 minute intervals if no flame is sensed. In 3-way models, the DC element will drop out and the DC mode light will flash if the voltage level falls too low for more than 10 seconds. Choose according to Dometic Board number.