sealed pneumatic line-type detector 密封空气管式火灾探测器

sealed eumatic line-type detector 密封空气管式火灾探测器

pneumatic line type heat detector 线型气动感温探测器

cable line-type fixed temperature detector 缆式线型定温探测器

line-type fire detector [安全] 线型火灾探测器

line-type heat detector 线型感温探测器 ; [安全] 线型感温火灾探测器

line type heat fire detector 线形感温火灾探测器

cable line-type heat detector 缆式线型感温火灾探测器

laser line type smoke detector 激光线型感烟探测器