ISO/IEC 14762 sets the requirements for functional safety for Home and Building ElectronicSystems (HBES) products and systems, a multi-application bus system where the functionsare decentralised, distributed and linked through a common communication process. Therequirements may also apply to the distributed functions of any equipment connected in ahome or building control system if no specific functional safety standard exists for thisequipment or system.The functional safety requirements of this International Standard apply together with therelevant product standards for a device if any.This International Standard does not provide functional safety require