
Hearing aids; magnetic field streng in audio-frequency induction loops for hearing aid puroses.
NORMA vydaná dňa 1.11.1991
Designation standards: DIN IEC 60118-4:1991-11
Note: NEPLATNÁ
Publication date standards: 1.11.1991
The number of pages: 6
Approximate weight : 18 g (0.04 lbs)
Country: German technical standard
Kategória: Technické normy DIN
Hörgeräte; Magnetische Feldstärke in Sprechfrequenz-Induktionsschleifen für Hörgeräte.