LightwaveRF Radiator Valves and Electric Switches provide room by room (zoned) heating control at an incredibly low cost. Because they can be linked to the Lightwave Link, you can use the LightwaveRF App to monitor and control the temperature of each room in your house in real time. You can also set automatic schedules and edit them from anywhere. LightwaveRF Radiator valves (TRVs) control standard central heating radiators and can be screw fitted by hand without specialist knowledge or tools. Electric Switches are 3000W rated and can manage electric radiators or towel rails.