This European Standard concentrates on control applications for Home and Building HBES OpenCommunication System and covers any combination of electronic devices linked via a digitaltransmission network. Home and Building Electronic System as provided by the HBES OpenCommunication System is a specialized form of automated, decentralised and distributed processcontrol, dedicated to the needs of home and building applications.The EN 50090 series concentrates on HBES Open Communication System Class 1 and includes aspecification for a communication network for Home and Building for example for the control oflighting, heating, food preparation, washing, energy ma