
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:Verband Deutscher Elektrotechniker

专家解读视频
2000 [01/04/2000]DRAFT 1997 [01/02/1997]
UNE EN 50136-2-4:1998 - Identical
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
BS EN 50136-2-4:1998 - Identical
SN EN 50136-2-4:1998 - Identical