Larry makes a good point. Checking the ambient temp on the #1 will also make you nuts. Besides my Maverick, I have 2 or 3 inexpensive digital thermometers around, similar to the link below, for when I want to probe more than one place on a single piece of meat (like turkey white meat and dark meat), or when I want to probe multiple pieces of meat (like whole packer brisket, which I cut in two pieces to fit in the #1, or two butts).
https://www.walmart.com/ip/ThermoPro-TP04-Large-LCD-Digital-Cooking-Kitchen-Food-Meat-Thermometer-for-BBQ-Grill-Oven-Smoker-Built-in-Clock-Timer-with-Stainless-Steel-Probe/549681020