EN 41003 : particular safety requirements for equipment to be connected to telecommunication networks / European Commitee for Electrothecnical Standardization
EN 41003 : régles particulières de sécurité pour les matériels destinés à être reliés aux réseaux de télécommunications / Comité Européen de Normalisation Electrotechnique
EN 50010 : low voltage switchgear and controlgear for industrial use. Inductive proximity switches. Methods for measuring the operating distance and operating frequency / European Commitee for electrothecnical Standardization
Signalling on low-voltage electrical installations in the frequency range 3khz to 148,5 khz : part 1: general requirements, frequency bands and electromagnetic disturbances: EN 50065 -1: 1991 / European Commitee for Electrothecnical Standardization