@Strygun 

Hi,

I am not aware of any TP-Link range extender that can extend main network and guest network at the same time. I have a RE450 v4.0 and this version also can't do it.

I'd say your best bet might be to just buy a second RE200 and then use one RE200 to extend the main network's 2.4 GHz and 5 GHz SSIDs and the other RE200 to extend the guest network's 2.4 GHz and 5 GHz SSIDs.
 

  @woozle Oh, shoot, that's unfortunate - and kind of surprising.

  @Joseph-TP Hi - I guess I'm in luck -  I have an Archer AX55_V1. Which TP-link range extenders would be able to extend both the main and guest network?

Strygun wrote

Hi - which range extenders can extend both the main and guest networks at the same time? I currently have an RE200, but it can only extend either the main or the guest, but not both. I'm looking at upgrading, but it's hard to tell which ones can do this. I know the RE450 can, but what about the RE315, RE305, etc.? If it matters, I'm in Spain - I imagine the hardware is the same across regions, but just in case...

  @Strygun 

  @Oubd your message appears to be blank?

  @Joseph-TP Thanks. It seems the RE220 has been discontinued and the other options are far more expensive than my RE200, which is what I'm hoping to replace. I don't suppose you know others closer to the RE200 price range that can extend both networks?

The link you shared above for the AX55 firmware has this in the firmware release notes:

1. Added Easymesh R2 Traffic Separation feature to support network traffic segmentation.

**This allows the satellite unit to extend the Guest Network via EasyMesh.

**Both the main router and satellite unit must support this feature.

So, is there a list of satellite units made by TP-Link that support this Easymesh R2 Traffic Separation feature?