In its simplest form the user activates the alarm by pulling the handle down which completes a circuit and locks the handle in the activated position sending an alarm to the fire alarm control panel.
Fire alarm pull station symbol.
Fire protection systems shall be installed by a contractor licensed to perform such work in the project jurisdiction.
Symbol description symbol description fire alarm general notes.
Fire alarm pull station.
A fire alarm pull station is an active fire protection device usually wall mounted that when activated initiates an alarm on a fire alarm system.
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Refer to the symbol legend sheet for special symbols used in a particular set.
Fire alarm annunciator panel.
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Electrical plan symbols fire alarm each engineering office uses their own set of electrical and fire alarm symbols.
However the symbols below are fairly common across many offices.
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Bg 12lx addressable manual pull station.
Fire alarm system and devices shall be installed to the latest edition of nfpa 72.
Ms 9600ls intelligent addressable fire alarm system.