The Controller 67 replaces the module on T series fans (EC motor). It allows you to set a minimum fan speed and have it ramp up depending on temp or humidity. I assumed that I received the “old” controller BUT after fact checking again, just now.
Controller 67 is the latest one available from 2020. It’s my bad for thinking 
otherwise.
Just removed my horribly wrong comment above as I was wrong lol 
I do have and recommend Controller 67 that should be in the box when you buy the fan.