There’s no built-in driver for either of the two Somfy controllers (the ZRTSI Z-Wave 16-channel controller, or the myLink WiFi to RTS bridge). I’ve got both. There is, at present, no user-written driver for the myLink, but I’m considering writing one - Somfy is going off in a different direction that is integration-partner only for the myLink, and has removed the myLink API spec from its website. There is a user-written driver for the ZRTSI controller (you can get them on eBay) here, and I can verify it works with Hubitat: