I use this one, bought 2 and can have 2 wireless digital read outs and a spare module that connects to batteries, Joe.
Takes a couple weeks to get, they have 50a to 500a units.
https://www.ebay.com/itm/233594820158
Have a pi0 with MotioneyeOS looking at 1 monitor and integrated into Hassio...
Similar response from SA, except I have 4 Gyll and 2 Jbd's, will try usb hub in the morning, thanks Joe.
Update - unpowered hub works, only able to see 4 Gyll's or 2 Jbd's at a time by switching config's, BUT per Pierre will be able to see Mixed batteries in the Future, His response -
Hi...
Just tried through a Growatt Rs485 hub and still can only see one JBD at a time, with hub hooked to separate usb on Pi4b i get invalid data with both Jbd's hooked to hub, one at a time works. Anyone have tis working yet?