Hive Smart Heating Thermostatic Radiator Valve (TRV) with Smartphone Compatibility, WhiteHive Radiator valves manage your heating room by room from your smartphone and never waste money heating empty rooms Easy to control manage it all from your smartphone via your Hive app to turn your Radiator on and off without affecting the heating in the rest of your home Precise temperature setting Set the exact temperature you want in degrees, rather than just selecting a setting between 1 5 Installation in an instant simply unscrew your existing