Whenever you want to find out more about a certified product, you can look it up on the official Z wave alliance site. In this case, they are made by a Chinese company, greenwave systems, and I can tell you from experience that it’s very difficult to get a response in English from the company site.
Vesternet, on the other hand, always has very helpful technical support, and they have this product marked as “end of life” on their website, meaning it’s been discontinued by the manufacturer. Most likely to be replaced by a Z wave plus version, although probably at a higher cost.
So you will just need to shop around to see if any other retailers still have stock of the old model.
