As the original question asker I have been copied on the responses. My question in Post #1 was whether the Debug “unknown command class 01” that I accidently stumbled on was cause for concern and the discussion veered off the rails from there.
I bought these for much the same reasons as @jschmidt and my non-z-wave programmable thermostat had died. I liked the cost, Zwave functionality, that they could be powered from the HVAC (with battery as a backup) and were programable using OpenHAB rules. Also without Z-wave they can be programmed just like my old thermostat, so are not dependent on OpenHAB. I didn’t care about the humidity sensor or even know about it until later.
I think the answer to my original question can be derived from the last post by @sphillips containing the comment “…compliant except for humidity sensor data” is “No cause for concern”. These devices have worked well for me in both winter and summer at controlling temperature (and as I updated OpenHAB over the last 7 months- currently on 2.5.5).
However, as a tinkerer, but with very limited programming skills I would like to try your patch, but need some clarification. I downloaded the zip file from git hub and extracted it into a folder with files and more folders. Do I put all this in the OpenHAB addons folder? The other files in my addons folder are .jar files, but I don’t know how to get from what I have to .jar. Also do I need to uninstall Zwave in paperUI before I add this patched version in the addons? Hope this makes sense and thanks for your efforts.
Bob