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4. CIRCUITS AND PATHWAYS 4.1 Signaling Line Pathways 4.1.1 Pathways Class Designations and Survivability Pathways class: _ _ Survivability-level: _ _ -- _—_ Quantity: (See NFPA 72,Sections 12.3 and 12.4) 4.1.2 Pathways Utilizing Two or More Media Quantity: Description: 4.1.3 Device Power Pathways ®No separate power pathways from the signaling line pathway ❑Power pathways are separate but of the same pathway classification as the signaling line pathway ❑Power pathways are separate and different classification from the signaling line pathway 4.1.4 Isolation Modules Quantity: 4.2 Alarm-Initiating Device Pathways 4.2.1 Pathways Class Designations and Survivability Pathways class: Survivability level:. Quantity: (See NFPA 72,Sections 12.3 and 12.4) 4.2.2. Pathways Utilizing Two or More Media Quantity: Description: 4.2.3 Device Power Pathways ®No separate power pathways from the initiating device pathway ❑Power pathways are separate but of the same pathway classification as the initiating device pathway ❑Power pathways are separate and different classification from the initiating device pathway. 4.3 Non-Voice Audible System Pathways 4.3.1 Pathways Class Designations and Survivability Pathways class: _ _ Survivability level: __ _ Quantity: (See NFPA 72,Sections 12.3 and 12.4) -._- �- -- - 4.3.2 Pathways Utilizing Two or More Media Quantity: _.---- -=--- - - Description: - --- _ 4.3.3 Appliance Power Pathways ®"No separate power pathways from the notification appliance pathway ❑Power pathways are separate but of the same pathway.classification as the notification appliance pathway, ❑Power pathways are.separate and different classification from the notification appliance pathway" . NFPA 72, Fig..10.18.2.1.1 (p. 3.of 12) Copyright 02009 National Fire Protection Association.This form maybe copied for individual use other than for resale.It may not be copied for commercial sale or distribution. "