This part of the ISO 16484 series specifies the hardware requirements in order to carry out building automation tasks. This part of this standard relates to physical devices, i.e.: devices for human interaction like management stations or operator panels; devices for data storage and analysis like edge or cloud servers; devices for control applications like automation stations; devices for physical quantities acquisition like sensors and actuators. This standard includes a generic system topology, based on a building network infrastructure, which includes both the devices inside the building envelope and those outside the building envelope.