Lesson 4 | Fire Alarm Systems

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4-كورس انذار الحريق (لوحات التحكم التقليدية و المعنونة) Conventional and analogue addressable panel

Lesson No : 04

00:10:02

4-كورس انذار الحريق (لوحات التحكم التقليدية و المعنونة) Conventional and analogue addressable panel

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