- What is a Fire Alarm System, and how you can tell the difference between each type of system
- What is wire supervision, and how you can use supervision to troubleshoot Class A and Class B circuits
- Why does the NAC reverse voltage when it sounds the alarm, and how you can use that voltage reversal to find backwards wired devices
When you understand how the Conventional Fire Alarm System works, it's easier to fix.
71 Pages - Over 70 Drawings
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