The system consists of concentrating fire alarm device and regional fire alarm device. It is characterized as simply structure, working reliable, function powerful, price cheap and practical.
该系统由集中火灾报警器及区域火灾报警器组成，具有结构简单，工作可靠，功能完善，造价低廉，实用等特点。
The system consists of concentrating fire alarm device and regional fire alarm device. It is characterized as simply structure, working reliable, function powerful, price cheap and practical.
该系统由集中火灾报警器及区域火灾报警器组成，具有结构简单，工作可靠，功能完善，造价低廉，实用等特点。
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