DIN ETS 300381-1995 听力损伤人用电话.助听器电话耳机的感应连接件; 英文版本 ETS 300381:1994

标准号：DIN ETS 300381-1995
中文标准名称：听力损伤人用电话.助听器电话耳机的感应连接件; 英文版本 ETS 300381:1994
英文标准名称：Telephony for hearing impaired people - Inductive coupling of telephone earphones to hearing aids; English version ETS 300381:1994
标准类型：L31;M11
发布日期：1999/12/31 12:00:00
实施日期：1999/12/31 12:00:00
中国标准分类号：L31;M11
国际标准分类号：33.050.10
适用范围：The document deals with telephones, which are intended for direct application to the ear and which provide, at the earphone, a magnetic field for coupling to hearing aids.#,,#