Using Zwave ZipGateway.
How do I find out which model is this device?
(I know that it’s an Inovelli, but I don’t know which model)
Looks like an Inovelli NZW30.
There isn't a great way to do this since any given company's marketing team doesn't need to use the same product identifier as Z-Wave provides, and they often don't. But Z-Wave JS has a lovely config database that documents many of these, as contributed by its users and developers, so it's a good way to find some of these when you have the information you do!
In your case, the trick is to convert the decimal value (7681) Hubitat displays to hex (1E01), then search the database for that since it only uses hex. When I did that, I dug through the few results and found this one pretty quickly since you knew it was Inovelli:
(The Device ID and Device Type from your screenshot are the "Product Identifiers" in this database. They're both the same in your case though aren't always. I think the "type" ID is the first one and the "ID" (maybe the Plus ID?) is the second, but don't quote me on that...)