Hearing aids. Magnetic field strength in audio-frequency induction loops for hearing aid purposes.
NORMA vydána dne 15.11.1998
Designation standards: BS EN 60118-4:1998
Note: NEPLATNÁ
Publication date standards: 15.11.1998
The number of pages: 10
Approximate weight : 30 g (0.07 lbs)
Country: British technical standard
Kategorie: Technické normy BS