UNE EN 50136-2-4:1998被替代
Alarm Systems - Alarm Transmission Systems And Equipment - Part 2-4: Requirements For Equipment Used In Systems With Voice Communicators Using The Public Switched Telephone Network
出版：Asociacion Espanola de Normalizacion
专家解读视频
98 [04/12/1998]
NEN EN 50136-2-4:1998 - Identical
SS EN 50136-2-4 Ed. 1 (1998) - Identical
I.S. EN 50136-2-4:1998 - Identical
NF EN 50136-2-4:1998 - Identical
DIN EN 50136-2-4 (2000-04) - Identical
BS EN 50136-2-4:1998 - Identical
SN EN 50136-2-4:1998 - Identical
DIN EN 50136-2-4:2000 - Identical
