Effectively the signal is repeated in the shadows, but do not misunderstand the term "amplifier", there is no miracle, the signal is "amplified". Excluding gray area, the signal of the box is still the best. We can test / view this with inSSIDer which helps to choose the best network. On livebox FTTH v2 zte, the connection between the box and the repeater is done correctly by following the little manual. We must optimize the config repeater via the link mywifiext.net I kept the name assigned automatically with the extension _EXT, and everyone chooses the best signal depending on where it is located. I put the same password on the repeater on the box. Even key config WPA / WPA2 mixed, same value. On the box it is recommended to assign a fixed address to the repeater. And ESPECIALLY on the repeater, you must enable the DHCP server on a different range of addresses from that of the box and there it must be reserved for the elite because it is accessed by a hidden menu repeater [... ] linked is not indicated in the notice ... It's very c ... If we do not do this last little adjustment that is to check a box, everything is perfect between the box and the repeater pc wifi but no internet connection! As soon as this damn small box hidden menu is checked, miraculus miracula miraculum! Frankly it's abused!