Products marketed in any of the countries belonging to the European Economic Community must meet the requirements of the European Union's EMC Directive, 89/336/EEC. The EMC Directive specifies two essential requirements: (a) The device cannot interfere with radio or telecommunications equipment operation and (b) the device itself must be immune from electromagnetic disturbance due to sources such as RF transmitters and other equipment.

Proof of compliance can be demonstrated by meeting the appropriate CENELEC (European Committee for Electrotechnical Standardization) standards for both EMI and immunity. These standards are published periodically in the Official Journal of the European Union. Standards published to date include the following:

The requirements of the EN 55022 standard, which applies to information technology equipment (i.e. computers and computer peripherals), are similar to the FCC EMI requirements. EN 55022 and its companion document CISPR 22 describe test procedures and limits similar, but not identical to, the FCC Part 15 requirements and the ANSI C63.4 test procedures.

In order to claim conformity with the European Union's EMC Directive (and all applicable Directives), the product must be labeled with the CE mark shown at the top of this page.