I have placed an order for 3-Kasa Smart Thermostatic Radiator Valve with Hub. I am replacing my Aqara valves as they have caused me too many problems. Despite searching for info on the KH100 hub included in the Kit Ordered, I can't find any info about how it is set up. Is it connected to the mains, if so how is it connected? Also, the fact that it says it uses only 2.4ghz, I assume it connects to my router via WiFi as my Aqara system does. Look forward to helpful replies with my first question in this forum. TIA