A540I-8Ean -Analog Thermometer With Rotisserie Back Burner (Shown) A540I-7Ean -Analog Thermometer Without Rotisserie Back Burner Superior Design And Engineering Power The Aurora'S Unparalleled Performance. With Many Of The Same Features As Its Sister Echelon Series. The Aurora Series Grill Delivers Cooking Versatility. Durability And Longevity In A Beautifully Crafted Machine.