@Raven999 I still think you’re missing some of the components in this situation. If I’m wrong, my apologies. Here are some diagrams of the options you have that I hope will clear things up.
First, the way you’ve likely got your single Z-Wave network with a single Z-Net
HAOS is running multiple Docker instances, 1 for Home Assistant and the Z-Wave-JS Integration
The Integration then makes a WebSocket connection to the Addon Docker container running Z-Wave-JS-UI (that’s the ws://a0d7b954-zwavejs2mqtt:3000 reference in the integration configuration). Note that “a0d7b954-zwavejs2mqtt” is a docker host name reference for convenience but it just as easily could have been an IP address.
If you had a USB controller the Addon would reference a Linux device path (/dev/serial/by-id/mumble) but since you have a Z-Net that isn’t on the same host, your Addon configuration references a TCP connection to the Z-Net (tcp://192.168.1.101:2001) ser2net software.
The ser2net software on the Z-Net (RPi) points to the Linux device path of the EZZee Pi HAT (/dev/ttyAMA0)
With that you have end to end communications from Home Assistant to the Z-Wave controller.
Now consider adding a second Z-Wave network as you need to do. You have several options. Here are 2 discussed in this thread. First Option:
Using another host (Windows, Docker, or even cloning the existing Addon repository) you run a second instance of Z-Wave-JS-UI. A second integration is added to your existing Home Assistant and is configured to a different WebSocket address (I just made one up). The rest of the configuration is simply a repeat of the above steps with different IP addresses.
Cons: No automatic updates like the official Addon. You would have to keep the version up to date manually.
Second option:
Move one or both Z-Wave-JS-UI instances directly to the Z-Nets (this diagram shows moving both, but you could keep one stock)
The link I referenced in post 68 Z-NET Integration with HA - #68 by mterry63 shows you how to remove ser2net and install Z-Wave-JS-UI directly on the Z-Net. You can always buy a new SD card and back up the stock Z-Net configuration so you can revert by simply re-installing the original card. This is probably the route I’d go if I were to add a second network. Updating that software under docker isn’t that much of a chore.
Even with your proposed Zooz option (which I wouldn’t do as it will require you to migrate nodes to the new controller) you still need a second instance of Z-Wave-JS-UI which you can’t easily host on HAOS. Essentially you just swap the box in the diagram that says EZZee with the Zooz device. It doesn’t really help the situation much.
Hope this helps.