In my house, the ceiling fan boxes are wired to two on/off switches. One switch powers the fan; one powers the light. So far, the only switch I can find, which is purpose made is GE’s Embrighten model #14287. I’d be interested to see Inovelli’s take on this. I was on course to purchase GE’s light switches, until I discovered Inovelli.
If you’ve already got separate light and fan dumb-switches, then this might be more like what you’re looking for: Fan Switch | Project Windy City