Attractive and Big LCD Display     Communicate with Smart home devices via KNX      Fan coil function       Support external sensor      Multiple modes control(Manual,Economy and PRG. Mode)      Water underfloor heating or cooling system(3A) or Electric underfloor heating system       7 days Programmable (4periods/day)      Clock display      86*86*16.1mm dimension      Frost protection      CE, ROHS approved      2 pipes/4 pipes system