Sockets - distance to the main router 8m through a 30cm thick wall, range of the repeater then another 6m through the basement ceiling to a WLAN camera and through two 15cm thick brick walls to a WLAN radio. Both were not reached by the main router without the repeater.

Depends on the walls and the environment. In our case, it was simply possible to cover another room that was previously borderline in terms of reception.

About 15m