DIN-EN-60118-4 › Historical Revision Information
Hearing aids - Part 4: Magnetic field strength in audio-frequency induction loops for hearing aid purposes (IEC 60118-4:1981 + A1); German version EN 60118-4:1998 + A1:1998
Electroacoustics - Hearing aids - Part 4: Induction-loop systems for hearing aid purposes - System performance requirements (IEC 60118-4:2014); German version EN 60118-4:2015
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Document Number
DIN EN 60118-4:1999-08
Revision Level
1999 EDITION
Status
Superseded
Publication Date
Aug. 1, 1999