I still need a KIT1 case for mine (with the ethernet). I found one that had AA batteries (which don’t last long at all) and no Ethernet, but it won’t work for my use case. No response from the Plexiglass case designer.
Edit: I found some conversion factors here: https://radmon.org/index.php/forum/geiger-muller-tubes/43-conversion-factors?start=0