NEN 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：Nederlands Normalisatie Instituut
专家解读视频
Defines the requirements for equipment for voice communicator systems using the Public Switched Telephone Network, additional to those defined in EN 50136-2.
UNE EN 50136-2-4:1998 - Identical
SS EN 50136-2-4 Ed. 1 (1998) - Identical
I.S. 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
NF EN 50136-2-4:1998 - Identical
DIN EN 50136-2-4:2000 - Identical
