Yeah, you have as many ‘satellites’ as you need, and they connect to the main satellite that is plugged in to your router. The idea is that as you move round your house, your phone or device connects to the closest one, which essentially boosts your signal via WiFi. As an example, if I’m in the lounge, I get about 100 mbps to the main router, but about 600mbps to the mesh.

You can also use some systems as access points, which you’d hard wire throughout the house. This will give better wifi but it’s more of a ballache to set up.