Like you, I'd like to play with my Hometroller Zee S2. (2nd hand; Not yet received from Ebay)
Did you succed in your project ?
Programming Ardunios is a piece of cake and compared to z-wave items, the price is ridiculus.
@hleidecker Thank you VERY much for your plug in. I tried posting some questions to problems that I'm having but they must be moderated first...
If you have a chance:
How do I display battery levels?
The "Light indicators" don't work with a status change (Light is always off)