This is the Mi|Home heating bundle consisting of 3 radiator valves and 1 Mi|Home Gateway Each eTRV controls a radiator valve to regulate the heating in the room, based on timed programmes, set temperatures. 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 and at specific time on your settings in the App. As well as timers the Radiator Valves can be controlled with IFTTT, this allows you to 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.