I was able to get probe 1 to do meat--chicken--170 degrees. What is the barbecue setting? I thought it meant it would present the temperature of the environment it is in, so set probe 2 to barbecue with the high to 477 degrees and the low to 32 degrees, thinking it would display whatever the surrounding temperature is. That probe was sitting on top of the smoker with the outside air temp around 48 degrees, but instead of displaying any temp it just shows nothing but - - - . I had hoped that in the future I could put it inside the smoker and it would display the temp in there, but I guess not. Or is sitting on top of the metal topped and painted smoker somehow disabling it? If not, what is the barbecue setting used for?