I bought this powerline kit to my entire house with Wi-lwan while also crosslink (power) Lan. First I tried with whom I wanted to distribute the signal of my Fritz box throughout the house it with wireless repeaters. However, I quickly realized that this is 1 over 3 floors is not possible without strong signal loss and unnecessary use many repeaters. The 2nd issue of "normal" wireless repeaters is that they have no way for a LAN cable solution. This is me personally, however, important to connect my TV for example (a Samsung TV) to the Internet. This has even integrated a wireless adapter ... but this is not working well (dropouts; poor connection).
Now I have a total of 4 of these Powerline adapters, thus versorge several TV and all floors with WLAN without any signal loss by simply relaying the signal.