I bought the starter kit with the router unti and the wifi extender. Using it in clone mode in a large old house with very old wiring. I set the extender unit up in clone mode and put in in my basement (which has no wifi reception previously). The router unit is on the first floor (one above ground). The basement now has strong and stable wifi connection and the Wifi speed is like standing next to the router. My iphone connects flawlessly in the basement and thinks it is on the same wifi network. This is an excellent piece of kit so far. Been using it for two weeks and no issues, no resets.