The JBL development department feels much the same way with today’s mobile phones as we consumers do: as soon as a model is introduced, there is a new technical development and the new phone is out of date again!
This is what happened to JBL with the new JBL PROCRISTAL UV-C Compact water clarifiers. No sooner had the development department shortened the electrical units to save space and launched them under the name "Compact", than there was a new development for safety solenoid switches. And JBL does not want to withhold this from its customers. These new solenoid switches, which for safety reasons switch off the UV-C bulbs when the housing is opened, are much more reliable than a mechanical switch. And that’s why there is now an "updated version" with the name suffix "plus". The long name is admittedly hard to remember, but “plus” is always better: JBL PROCRISTAL UV-C Compact plus.