Just wanted to weigh in here on my newly acquired Tappacue thermometer/probe system...
I ordered and received it about 2 months ago but yesterday was really the first time I had it fully operational. I will say that I did not have a lot of fun setting it up for the first use. Getting it to connect with my home wifi was not as easy as I had hoped, but that might be due to my crazy setup (I have two piggy-backed routers and I had to disconnect one of them in order to get it to initially "pair."). Once I finally figured that part out I set out to discover what it was able to do for me.
Short answer: I was able to go to my kid's concert on the other side of town while my short ribs were smoking in the backyard!
I set up three temp probes (I bought the upgraded color-coded probes) with one for the chamber and two in different ribs. I set the appropriate temp alerts to send to my phone (Android), and made sure the communication between all parts was true.
Instantly, I started getting alerts on my phone regarding the three probes' temp readings being below the minimum set-point (obviously... as everything was just getting up to temp).
As each probe got to the right temp-range, I received appropriate notifications on my phone.
All-in-all, once it was up and running, it worked flawlessly. And it did exactly what I bought it to do.
I wish it actually had a way of connecting it to the controls of my electric smoker so I could use the app to control the chamber, but I suppose that's wishful thinking... or at least a few years away.
In the meantime, definitely a good product. I hope it holds up for a few seasons. It's not cheap.