So according to that, Single Pole, Dimmer using MOSFET + Relay is an option:
I’m not clear on what that would do exactly though. And I don’t know how to configure the switch between the two modes either. I see in ZHA a “Disable relay click in on off mode” parameter, which I assume is 261 Disable Relay, “Click” Sound:
In neutral on/off setups, the default is to have a clicking sound to notify you that the relay is open or closed. You may disable this sound by creating a, “simulated” on/off where the switch only will turn onto 100 or off to 0.
But that says it’s only for on/off setups. I have that setting disabled on my switches (which is the default)–disabled the disabling, so the relay click is enabled. On the switches set up as dimmers, there’s no click. And on the on/off switches, it does click.
I guess it might be cool if at 100% brightness, the relay clicks on to bypass the MOSFET dimming and connects the line directly to load, but I have no idea if the internals are wired so that’s possible.