Question about EcoFlow Micro Inverter 600W (CH)

One (for currently 414.-- with manufacturer type EFPOWERSTREAMMI-EU) is the EU variant - with the EU plug, the other (this one) is with a CH plug (as it is known in Switzerland, 3-pole...) - otherwise they are identical.
Regarding FI type B: I can't tell you, we already have FI type B's in use and have received a corresponding electricity meter (from BEEKAAAWEEE) - but it's best to ask the electrician or your electricity supplier.

I am a little undecided whether I want something from Ecoflow or Zendure. If 800W were permitted in Switzerland, the 800W model would be the better choice. However, it is nowhere apparent whether the 800W unit can be set to 600W. I couldn't find any information on this at Ecoflow itself. Does anyone have any experience with this?

The more expensive one is the EU and thus the 800 W variant. The Powerstream for 370 ca CHF is the CH variant with the 600 W power limit. 600 W is currently permitted in CH countries. Gods know when the 800 W will be ok...

Another question: Do I need a type B RCD?

Correction: Not EcoFlow MicroConverter but EcoFlow MicroInverter.