Fabulous Accurate Weber Thermometer! Works on any BBQ and/or Kitchen. Matched with spirit E-330 Weber. Prime Rib turned out perfect for first use. Now you do not need to keep checking your cooking and lifting that lid unnecessarily allowing that heat to escape. The i-grill 2 app works with precision and graphs your cooking time. You set the type of fauna on your grill and indicate how cooked you want it to be (Rare, Medium all the way to well done). Temperature set automatically and when reached you are notified. No need to be concerned about weight of the meat. Highly recommend.