scope:

This European Standard applies to all Home and Building Electronic Systems (HBES) and Building Automation Control Systems (BACS) and specifies the general requirements for these systems and products covering the following functionalities: - HBES class 1: simple control and command; - HBES class 2: simple voice and stable video transmission including class 1; - HBES class 3: video transfers including class 2. This European Standard provides an overview of this series of European Standards. To enable integration of a wide spectrum of applications, EN 50491 series covers: - electrical safety, - functional safety, - environmental conditions, - EMC requirements, - installation and cabling rules and topologies, - Smart Metering - Application specification (under development), - Smartgrid - Application specification - Interface and framework (under development). EN 50491 series is a product family standard.