6、pe 3 6W smallpox horn, in a ceiling area use spring clip for installation.系统设计在公共区域、走道等区域采用PC-1868D型36W天花喇叭,在有天花板的区域采用弹簧夹子进行安装。2、 In the area without condole adopts BS -1290c the wall hung horn. 在无吊顶的区域采用BS-1290C的壁挂式喇叭。3、 ...
1、System design in the public area and aisle such region adopts PC - 1868D type 3 ~ 6W smallpox horn, in a ceiling area use spring clip for installation. 系统设计在公共区域、走道等区域采用PC-1868D型3~6W天花喇叭,在有天花板的区域采用弹簧夹子进行安装。 2、In the area without condole adop...