
Hearing aids. Specification for dimensions of the nipple and sealing device for insert earphones
出版:British Standards Institution

專家解讀視頻
Specifies those dimensions which are essential in order to ensure the interchangeability of insert earphones as used with earmoulds or other attachments to the ear.
? British Standards Institution 2013
Amendment notes:
AMD 6182 published 31 October 1990
IEC 60118-5 Ed. 1.0 - Identical