Electro Industries Control Board, For Use With: WarmFlo® EM-WU102S5-SL1, EM-WU102S8-SL1, EM-WU153S5-SL1, EM-WU153S8-SL1, EM-WU204S5-SL1, EM-WU204S8-SL1 and EM-WU254S8-SL1 Select Plenum Heater