EN 55014-1 specifies limits and methods of measurement for the emission of electromagnetic disturbances from household appliances, electric tools, and similar apparatus, including equipment powered by the mains, batteries, or other sources. The standard covers the frequency range from 9 kHz to 400 GHz and aims to protect radio and television reception in residential environments. It applies to all household appliances, electric tools, and similar apparatus, regardless of whether they are used domestically, commercially, or in light industrial applications. This standard ensures that disturbances generated by such equipment do not exceed levels that would prevent other electronic equipment from operating as intended. It includes requirements for conducted and radiated emissions, and measurements are only necessary in frequency ranges where limits are specified.