Be aware there's a known issue right now with the night light on the new Chime Pro. It just stays on all the time and never turns off during the day, rather than auto on/off like it's supposed to. I've not ever tried using them as WiFi extenders, but they work very well as a doorbell for me (I have no true doorbell). I'd recommend a better router or mesh WiFi rather than rely on a Chime Pro as an extender, but the night light is a nice touch on the Pro. I'd recommend the regular Chime over the Pro unless you really care about the night light. (the night light problem is said to be fixed with a firmware update)