. Energenie Mi Home Heating Starter Pack (Home Gateway + 3 x Radiator Valves) This is the Mi Home heating bundle consisting of 3 radiator valves & 1 Mi Home Gateway Each e TRV controls a radiator valve to regulate the heating in the room based on timed programmes set temperatures. Using the e TRV improves your comfort & saves energy. The benefit of having e TRVs is that it enables you to control each radiator or room individually rather than heating your whole house from a single thermostat. Therefore you only heat the bedroom when it is in use which is likely to be at a differnet time to the lounge or sitting room. By only heating the rooms you are in you can make significant savings. The Radiator Valves can be used with our other features such as programmes. This means you are able to to set the required radiator valve to a spefici temperature & at specific time on your settings in the App. We have customers using them in all sorts of ways including for security convenience & energy saving purposes. As well as timers the Radiator Valves can be controlled with IFTTT this means that you can turn them on using the weather ESPN facebook to name but a few. It also means they can be used in conjunction with the Phillips Hue & Nest..