What is your preferred z-wave hardware for ceiling fan with light control?

I have a ceiling fan with a light combo. I’d like some type of physical control/button to control the fan and the lights and some automation/rules via openhab. I only have a single gang switch on the wall that controls power to the entire fan/light. With a single switch available, I think something scene-enabled would be a starting point(homeseer swtich).

What hardware are using or do you recommend to accomplish this?

from what i have found, there are no single gang fan/light controls. you can however change to a 2 gang and put a dimmer and separate fan control in.

do you have only a 2 wire or a 3 wire going to the fan? might change the above if only a 2 wire