There's also the metal handle to rest your hand on, which also acts as a target which you can find blindly, and from there you can find the correct knob by touch. You'll just have to remember the the third knob is the fan speed and so on. I imagine that you can use it without looking, and it seems to be designed that way. Also I'm pretty sure that the UI is replicated on the display behind the wheel so you don't have to look to see the numbers.