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Fire Protection Glossary - V


V


Visible Signal. A visible signal is the response to the operation of an initiating device by one or more direct or indirect visible notification appliances. For a direct visible signal, the sole means of notifications by direct viewing of the light source. For an indirect visible signal, the sole mans of notification is by illumination of the area surrounding the visible signaling appliance.

Voice Paging Protective Signaling System. A manual or automatic supervised paging system used to transmit a voice message, which may include information, instructions, or directions following a fire alarm, on a selective or all-call basis.
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ISSN 1554-074X

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Some information may be found within this web site that is reprinted with permission from one or more of the following: NFPA 70 National Electrical Code®,NFPA 72® National Fire Alarm Code®, & NFPA 101® Life Safety Code®, Copyright© NFPA, Quincy, MA 02269.

This reprinted material is not the complete and official position of the NFPA on the referenced subject, which is represented only by the standard in its entirety.