标题: BS 5839-9:2003 Fire detection and fire alarm systems for buildings — [打印本页] 作者: hgundas 时间: 2020-4-6 03:00:12 标题: BS 5839-9:2003 Fire detection and fire alarm systems for buildings —
[attach]222991[/attach] BS 5839-9:2003
Fire detection and fire alarm systems for buildings —
Part 9: Code of practice for the design,
installation, commissioning and maintenance of emergency voice
communication systems