I'm new to smoking and I just bought a used #2. I'm looking to buy a remote thermometer. I want a basic 2 probe unit that can monitor the smoker air temp and a meat temp. The website for some products say a 2 probe unit can be used to monitor 2 meats or 2 'BBQs'. What do they mean when they say the probes can be used to monitor 'BBQ'? What Is 'BBQ'? Is it the same as the air temp in a smoker? Their descriptions are so inconsistent... some say 'smoker', some say 'BBQ'... I can't figure it out. What is 'BBQ'?