Historical
IEC 60118-11 Ed. 1.0 b:1983
Hearing aids. Part 11: Symbols and other markings on hearing aids and related equipment
Applies to symbols and other markings on hearing aids and related equipment for the purpose of identifying control setting and giving information regarding technical functions and characteristics. Provides symbols and markings for the benefit of users and those involved in the fitting of hearing aids and related equipment.
Content Provider
International Electrotechnical Commission [iec]