JG Aura 230v Thermostat is an energy saving solution for controlling underfloor heating (UFH) systems, individual radiators and hot water. The 4-in-1 thermostat can be used as a programmable room thermostat, group control thermostat, group thermostat or hot water timer. The Group Thermostat can control up to eight thermostats, including digital and dial thermostats and a hot water timer. The optional data cable is not required if the thermostats are used as individual Programmable Room Thermostats. The mains wired thermostat removes the hassle of replacing batteries.