Use and Care Guide

ManualsBrandsUniversal Security Instruments ManualsCombination Smoke Carbon Monoxide DetectorsAC Hardwired Combination Smoke and Carbon Monoxide Detector with Battery Back-Up

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.

INTERCONNECTION & COMPATIBILITY: Interconnected alarms can provide earlier warning

of re than stand-alone alarms, especially if a re starts in a remote area of the dwelling. When

alarms are interconnected, all alarms will sound when the initiating alarm sounds, providing more

time to escape safely.

This alarm may be interconnected with a total of not more than 24 interconnected devices, i.e., as

many as 11 other Mister Sparky Safety Sentry or compatible 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 compatible CO alarms and heat alarms; and 6 other non-

initiating devices such as USI-960 relay modules.

This alarm can be interconnected with the following compatible models: ESD022W, ESD033W,

ESD004W, ESD004, ESD055W, MSD022W, MSD033W, MSD004W, MSD004, MSD055W,

MSD001E, 5304, MDSCN111, MICN109, MCN108, MI106, MDS107, MP117, USI-2430, USI-960,

MI106S, MIC1509S.

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 MDSCN111, MSDCN103, MICN109, and MCN108;

therefore, a natural gas alarm will NOT trigger the alarm of non-natural gas sensing models

within an interconnected system.

The following alarms can trigger QUICK FIND

Alarm Origination, but will not indicate Alarm

Origination on an interconnected system: USI-1103, USI-1203, USI-1204, USI-1208, USI-1209,

USI-1213, USI-5204, USI-3204, USI-7795, USI-2430, SS-2785.

TO DEACTIVATE THE LOCKING FEATURES: To remove the alarm for cleaning or servicing or to

replace the battery, you must rst remove the appropriate locking pin, if it has been installed.

1. Turn off AC power to the circuit.

2. Use long nose pliers to pull the locking pin out of the hole.

3. It is now possible to remove the alarm or replace the battery.

WIRING INSTRUCTIONS:

1. a. The appropriate power supply is 120 Volt single phase power supplied from a non-

switchable circuit NOT protected by a ground fault circuit interrupter.

b. Turn off AC power to the circuit before wiring the alarm.

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 CONNECTOR CONNECT TO

BLACK “HOT” side of AC line

WHITE “NEUTRAL” side of AC line

YELLOW Interconnect wires of other alarms

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2. Insert the pin into the hole for the feature you are activating. Refer to the diagram below for

correct placement.

INSERT ALARM

LOCKING PIN

HERE

INSERT BATTERY

LOCKING PIN HERE