A commercially-available imaging product whose primary functions are scanning hard copy originals for electronic transmission to remote units and receiving similar electronic transmissions to produce hard copy duplicates.
The unit must be capable of being powered from a wall outlet or from a data or network connection. This definition is intended to cover products that are marketed as fax machines.
EU Energy Star specifications for Imaging Equipment v1.1 [PDF]:
ENERGY STAR v 1.1 qualified Fax machines