The wireless signal could be a bit stronger for my taste, it comes at us barely by 2 walls and by a blanket is also nurnoch 1 bar there. But also no box had the power the better. A Fritzbox 3270 with even rangebauten giant antennas was slightly better.
I have extended our WLAN with WLAN devolo dLAN adapters via so then also fits the weakening WLAN.
Summa sumarum I am very satisfied.