5
Special Requirements For Interconnected Smoke Alarms
Interconnected units can provide earlier warning of re than stand-alone units, especially if a re starts in a remote area
of the home. If any unit in the series senses smoke, all units will alarm. This unit can be interconnected with
First Alert
®
smoke alarms
SA4120B, SA4121B, SA4919B, SA86B, SA100B
; BRK Electronics
®
smoke alarms
100S, 2002RAC, 4120B, 4120SB,
4919, 5919, 5919TH, 86RAC;
BRK Electronics
®
heat alarm
HD6135F.
IMPORTANT!
Interconnect units within a single family residence only. Otherwise all households will experience unwanted
alarms when you test any unit in the series. Interconnected units will only work if they are wired to compatible
units and all requirements are met.
Interconnected units must meet ALL of the following requirements:
A maximum of 18 units total may be interconnected (Maximum of 12 smoke alarms).
The same fuse or circuit breaker must power all interconnected smoke alarms.
The total length of wire interconnecting the units should be less than 1000 feet (304.8 meters). The
interconnect wire should be #18 gauge or larger, rated at least 300V. If an interconnect wire is not
already part of your household wiring, you will need to install one. This type of wire is commonly avail-
able at Hardware and Electrical Supply stores.
All wiring must conform to all local electrical codes and Article 760 of the National Electrical Code
(NFPA 70). Refer to NFPA 72, Chapter 2 and/or your local building code for further connection require-
ments.
.

WEEKLY TESTING

It is important to test this unit every week to make sure it is working properly. Using the test button is the
recommended way to test this smoke alarm.
Press and hold the test button on the cover until the alarm sounds (the
unit may continue to alarm for a few seconds after you release the button). If it does not alarm, make sure the unit is
receiving power and test it again. If it still does not alarm, replace it immediately.
During testing, you will hear a loud,
repeating horn pattern: 3 beeps, pause, 3 beeps, pause. The strobe light should ash every time you test
the smoke alarm.
IMPORTANT!
When testing smoke alarms in an interconnected series, you must test each unit individually. Make sure all units alarm
when each one is tested. The strobe lights on all units should ash as each individual smoke alarm is tested.
REGULAR MAINTENANCE
This unit has been designed to be as maintenance free as possible, but there are a few simple things you must do to
keep it working properly.
Test it at least once a week.
Clean the smoke alarm at least once a month; gently vacuum off any dust using your household vacuums
soft brush attachment.
Never use water, cleaners or solvents since they may damage the unit.
Relocate the unit if it sounds frequent unwanted alarms. See Where To Install Smoke Alarms.
CAUTION!
If the strobe light lens is loose or broken, the entire unit should be replaced immediately. Never remove the
strobe light lens for any reason. Doing so can permanently damage the unit and will void your warranty.

IF THIS SMOKE ALARM GOES INTO ALARM

Responding To An Alarm
During an alarm, you will hear a loud, repeating horn pattern: 3 beeps, pause, 3 beeps, pause.
If the unit alarms and you are not absolutely certain of the source of the smoke, get everyone out of the house
immediately. Stay calm and follow your family escape plan. Stay as low to the ground as possible, and cover your
mouth with a damp cloth. Never open a door before testing to see if it is hot. Call the Fire Department from outside, and
give them your address then name. Read What To Do In Case Of Fire at the end of this manual for more information.
If the unit alarms and you are certain that the source of smoke is not a recooking smoke or an extremely dusty
furnaceopen a nearby window or door and fan the smoke away from the unit. This will silence the alarm, and once the
smoke clears the unit will reset itself automatically.

IF YOUR SMOKE ALARM IS NOT WORKING PROPERLY

If this unit is not working properly, there are a few simple things you should check before returning or replacing the unit:
Make sure it is clean as described in Regular Maintenance. A build-up of dirt, dust or grease can affect the
units
performance.
Make sure the unit is installed in a proper location. If you experience frequent unwanted alarms, try relocat-
ing it.
See Where to Install Smoke Alarms for details.
Make sure it is receiving AC power from the household current.
CAUTION!
Always discharge the branch circuit before servicing an AC or AC/DC smoke alarm. First, turn off the AC
power at the circuit breaker or fuse box. Next, remove the battery from smoke alarms with battery back-up.
Finally, press and hold the test button for 5-10 seconds to discharge the branch circuit.
If the unit is still not operating properly, and it is still under warranty, send it, shipping prepaid, to BRK Brands, Inc.
,
Attn.:
Customer Service, 3920 Enterprise Court, Aurora, IL 60504-8132. Enclose a note in the package describing whats
wrong with the unit. See warranty information at the end of this manual.
CAUTION!
Do not try to x the unit yourselfthis will void your warranty!
WARNING!
Failure to meet any of the requirements for interconnecting smoke alarms could damage the
units, and cause them to malfunction, removing your protection.
AC and AC/DC smoke alarms can be interconnected. Under AC power, all units will alarm
when one senses smoke. When power is interrupted, only the AC/DC units in the series will
continue to send and receive signals. AC powered smoke alarms will not operate.

}}

1 Smoke alarm 3 Power connector 5 Junction box 7 Interconnect wire
2 Ceiling or wall 4 Wire nut 6 Neutral (white) AC
wire 8 Hot (black) AC wire
A.
Unswitched
120V AC
60Hz source
B.
To additional units;
Maximum = 18 total
(Maximum 12
smoke alarms)
WARNING!
NEVER use an open ame of any kind to test this unit. You might accidentally damage or set re to
the unit or to your home. The built-in test switch accurately tests the units operation as required
by Underwriters Laboratories, Inc. (UL). If you choose to use an aerosol smoke product to test the
smoke alarm, be certain to use one that has been Listed to Underwriters Laboratories, Inc. Safety
Standards, and use it only as directed. Use of non-UL Listed products or improper use of UL
Listed products may affect the smoke alarms sensitivity.
Do not look directly at or touch the lens while the strobe light is ashing. Doing so can hurt your eyes or
burn your ngers. If the strobe light does not ash during testing, the smoke alarm should be replaced.
WARNING!
If the unit alarms and you are not testing the unit, it is warning you of a potentially dangerous
situation that requires your immediate attention. NEVER ignore any alarm. Ignoring the alarm
may result in injury or death. If the unit alarms and you are not absolutely certain of the source
of the smoke, get everyone out of the house immediately.
Never disconnect the AC power to quiet an unwanted alarm. Disconnecting the power disables
the alarm so it cannot sense smoke. This will remove your protection. Instead open a window
or fan the smoke away from the unit. The alarm will reset automatically.
DANGER!
ELECTRICAL SHOCK HAZARD: Attempting to disconnect the power connector from the unit
when the power is on may result in electrical shock, serious injury or death.
IMPORTANT!
When an interconnected system of AC powered units is in alarm, the alarm indicator light on the unit(s) that
initiated the alarm will blink rapidly. It will remain OFF on the remaining units.