DIN EN 300422-4:2017-09
Действует
Wireless Microphones - Audio PMSE up to 3 GHz - Part 4: Assistive Listening Devices including personal sound amplifiers and inductive systems up to 3 GHz - Harmonised Standard covering the essential requirements of article 3.2 of Directive 2014/53/EU (Endorsement of the English version EN 300 422-4 V2.1.1 (2017-05) as German standard)
