Before I got the SI3d, I was assured by cook shack that my cook shack controller was a PID although it lacked any programming aside from setting a time or an internal temp. Tony stated that it was strictly a digital; not PID. All I know is that like a home oven it was simple set temp and time or temp and temp when using a meat probe. The SI controller is much more versatile, but that versatility comes at a price for those who like things simple. I have the upgrade wifi controller and appreciate the better screen although I do not use the wifi. So no help from me on the wifi issue. As for programming various parameters, I am ignoring those as well. Strictly a time or temp person.