i would say first one about 13 meters away from the router. second one is in the garage also about 13 meters away in the opposite direction .
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i use fw1.06 on the cover-2202 and they use wired backhaul.
reason for why the 2,4Ghz is on on the router is that the vacuum cleaner does not support 5Ghz and 2,4Ghz with same ssid for some reason.
I recently bought the Cover to get coverage in the garage an in the garden.