I have a 3250 SqFt home and this device does very good. I have it installed on the first floor with my primary router on the second floor of the home. You really cant answer the question of what is the range because the range of the signal will be affected by many different things, for instance other wireless devices in the area, the structure of the dwelling, i.e. concrete, wood framing and drywall, how many walls wind up between the device and the client trying to connect to it and the likes. I will tell you the 2.4Ghz band generally speaking has a better range than the 5 Ghz band, however the 5 Ghz band is less susceptible to interference from other signals and offers a higher bandwidth possibility, better for streaming files like video files. If you get one and are not happy with the range, I would try move it around to different locations first before returning it.