DO NOT TAMPER WITH WIRES WHEN POWER IS ON!
For alarms that are used as single non-interconnected, stand-alone alarms, do not connect the
yellow wire to anything. Insulate this wire (tape it) in place to make certain the yellow wire cannot
contact any metal parts.
Interconnected alarms can provide earlier warning of fire than stand-alone alarms, especially if a
fire starts in a remote area of the dwelling. When alarms are interconnected, all alarms will sound
when one alarm first goes into alarm. This alarm may be interconnected with a total of not more
than 24 interconnected devices, i.e., as many as 11 other USI ELECTRIC or UNIVERSAL model
smoke alarms or combination smoke and carbon monoxide (CO) or smoke and carbon monoxide
/ natural gas alarms; 6 other initiating alarms which may be a combination of USI ELECTRIC or
UNIVERSAL CO Alarms and Heat Alarms; and six other non-initiating devices such as USI
ELECTRIC Relay Modules.
This alarm can be interconnected with the following models:
2995CN
,
5304CN
,
MI100CN,
MI106CN
,
MDS211CN
,
MDS201CN,
2985CN,
5303CN
,
MI200CN, MI210CN
,
MDS101CN,
MDS107CN, 3885CN
,
3895CN, MP118CN, MP117CN
,
3303CN
,
3304CN
,
MP202CN,
MP212CN
,
MDSCN111CN, MDSCN103CN, MICN109CN, MICN102CN, MCN105CN, MCN108CN, SS-785-
CAN, SS-790-CAN, SS-795-CAN, USI-1103-CAN
,
USI-7795-CAN, USI-7385, USI-7390, USI-
7485, USI-7490, CD-9385, CD-9390, CD-9485, CD-9490, CD-9795-CAN, CD-9785-CAN AND
USI-960, RM-100 Relay.
When any one of these interconnected models goes into alarm, it will trigger the
corresponding alarm within the interconnected system with respect to their sensing
capabilities. Natural gas detection is only present in models MDSCN111CN, MSDCN103CN,
MICN109CN, MICN102CN, MCN108CN and MCN105CN; therefore, a natural gas alarm will
NOT trigger the alarm of non-natural gas sensing models within an interconnected system.
The following alarms cannot reset units on an interconnected system: USI-7795-CAN, CD-
9795-CAN, CD-9785-CAN, USI-7385, USI-7390, USI-7485, USI-7490, CD-9385, CD-9390, CD-
9485, CD-9490.
The following alarms cannot trigger QUICK FIND
®
Alarm Origination on an interconnected
system: USI-7385, USI-7390, USI-7485, USI-7490, CD-9385, CD-9390, CD-9485, CD-9490.
The following alarms can trigger QUICK FIND
®
Alarm Origination, but will not indicate
Alarm Origination on an interconnected system: USI-1103-CAN
,
CD-9795-CAN, CD-9785-
CAN, USI-7795-CAN, SS-785-CAN, SS-790-CAN, SS-795-CAN.
The following alarms cannot be reset through an interconnected system because they do
not have QUICK FIND
®
Alarm Origination: USI-1103-CAN, SS-785-CAN , SS-790-CAN, SS-
795-CAN, USI-7385, USI-7390, USI-7485, USI-7490, CD-9385, CD-9390, CD-9485, CD-9490,
CD-9795-CAN, CD-9785-CAN, USI-7795-CAN.
Interconnected CO alarms or CO alarm circuit of combination smoke and CO and Natural
Gas alarms will only respond if a CO alarm / event initiates the alarm. All other alarms remain
silent.
Interconnected combination Natural Gas Alarms will only respond if a natural gas event
initiated the alarm. All other alarms remain silent.
Interconnected smoke alarms, heat alarms and relay modules will only respond if a smoke
alarm / event or heat alarm / event initiates the alarm. All CO and Natural Gas alarms remain
silent.
Note that alarms without battery backup will not respond during an AC power failure.
NOTE: Relay Modules/USI-960 will not respond if a CO or Natural Gas alarm / event initiates
the alarm.
Page 8
c.
There are three pigtail wires (black, white and yellow) coming from the AC QUICK CONNECTOR.
The proper wire connection is as follows:
WIRES FROM QUICK CONNECTORCONNECT TO
BLACK
"HOT" side of AC line
WHITE
"NEUTRAL" side of AC line
YELLOW
Interconnect wires of other alarms
