Voluntary standards that have been ratified by one of the European Standardization Organizations (CEN and CENELEC) and an EN standard automatically becomes a national standard in each of the 33 member countries.

Prepares and publishes international standards for all electrical, electronic and related technologies.

Worldwide federation of national standards bodies from more than 145 countries, promotes the development of worldwide standards to facilitate international exchange of goods and services.

Safety standards that reflect international consensus on what constitutes a high level of safety for protecting people and the environment from harmful effects of ionizing radiation.

United Nations agency for information and communication technologies, allocates global radio spectrum and satellite orbits and develops the technical standards. Full-text of recommendations available.