
Building Intercom System - Part 1-2: System Requirements - Building Intercom Systems Using The Internet Protocol (Ip)
出版:Danish Standards

專家解讀視頻
2017 [18/10/2017]
IEC 62820-1-2 : 1ED 2017 - Identical
EN 62820-1-2 : 2017 - Identical
IEC 62820-1-2 : 1ED 2017 - Identical
EN 62820-1-2 : 2017 - Identical
EN 62820-1-2:2017 - Identical