• When alarms are interconnected, all interconnected units must be powered
from a single circuit.
• A maximum of 24 Kidde and/or FireX devices may be interconnected in a mul-
tiple station arrangement. The interconnect system should not exceed the
NFPA interconnect limit of 12 smoke alarms and/or 18 alarms total (smoke,
heat, carbon monoxide, etc.). With 18 alarms interconnected, it is still possi-
ble to interconnect up to a total of 6 remote signaling devices and/or relay
modules.
• When mixing models which have battery backup (i12040, i12040A, i12060,
i12060A, i12080, i12080A, i12090A, i4618, i468A, 1275, 1276, 1285, 1296,
PE120, PI2000, PI2010, KN-COSM-IB, RF-SM-ACDC, KN-COPE-I, KN-SMFM-I,
HD135, KN-COB-IC, KN-COP-IC) with models without battery backup, (i1235,
i12020, i12020A, KN-COSM-I SM120X, CO120X SL177I) be advised that the
models without battery backup will not respond during an AC power failure.
• For more information about compatible interconnect units and their function-
ality in an interconnect system, visit our web site at: www.Kidde.com
• The maximum wire run distance between the first and last unit in an intercon-
nected system is 1000 feet.
• Figure 5 illustrates interconnection wiring. Improper connection will result in
damage to the alarm, failure to operate, or a shock hazard.
• Make certain alarms are wired to a continuous (non-switched) power line.
NOTE: Use standard UL listed household wire (as required by local codes) avail-
able at all electrical supply stores and most hardware stores.
FIGURE 5 INTERCONNECT WIRING DIAGRAM
WIRES ON ALARM HARNESS CONNECTED TO
Black Hot Side of A.C. Line
White Neutral Side of A.C. Line
Red Interconnect Lines (Red Wires) of Other
Units in the Multiple Station Set up
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