Hey @projects, any news on this?
I have the same co detector (Fibaro FGCD-001 ZW5 v3.2)
I currently use the generic z-wave CO/Smoke sensor driver, which looks like it works but has limited functionality and a smoke sensor parameter that isn't really there.
Does the driver from @bobbles work for you?
PS. you can test the meter by holding the B button , when the light goes on hold for 3 more seconds and release, should show in the Hub
PPS. the title states co2 which is a different thing, this is a CO [Carbon Monoxide] like you stated in the body text 
Download the Hubitat app
