usi USI-7795 Operation manual

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MODEL USI-7795
SMOKE & CARBON MONOXIDE ALARM
WITH SILENCE CONTROL
READ ALL INSTRUCTIONS
The smoke alarm uses an extremely small amount of a radioactive element in the ionization
chamber. Do not tamper with radioactive sealed source or try to repair the smoke alarm
yourself.Refer to instructions for repairs.
LIMITATIONS AND FUNCTIONS
• Thiscombination smoke/carbonmonoxide(CO)alarmrequires constant120VACpowerAND
a working 9Volt battery to operate properly.
• THERE ARETWO BASIC SMOKE ALARMTYPES - IONIZATION AND PHOTOELECTRIC.
Ionizationsmoke alarms (such as this smokealarm) are yourbestoverallchoiceforreliability
and fast response time, since they quickly sense small "invisible" smoke particles and will
also sense larger "visible" smoke particles. Photoelectric smoke alarms may respond more
quickly in certain types of fires, for example - slow smoldering fires with large "visible" smoke
particles. ALL TYPES OF SMOKE ALARMS HAVE LIMITATIONS. NO TYPE OF SMOKE
ALARM CAN SENSE EVERY KIND OF FIRE OR SMOKE EVERY TIME.
• SMOKE ALARMS can sound an alarm only when smoke reaches their sensors.Smoke may
not reach the smoke alarm QUICKLY ENOUGH to ensure safe escape.They do not sense
heat, flame or gas (propane).
• ALL alarms have limitations. This combination smoke/CO alarm is not foolproof and is not
warranted to protect lives or property.It is not a substitute for insurance.
• WARNING - SINCE A SMOKE OR CO ALARMWILL NOTWORKWITHOUT POWER, having an
alarm(s) that works from two completely different power sources, such as an AC direct wire with
battery backupcangiveyouanextrameasure ofprotectionincaseofan ACpowerfailureoradead
battery.
• CO ALARMS are designed to detect carbon monoxide gas from any source of combustion
that reaches their sensor.They are NOT designed to detect any other type of gas.
• USINGA SMOKE ALARMIN A SMOKYAREA LIKE A KITCHEN, OR IN A HIGH HUMIDITY
AREA NEAR A SHOWER, CAN CAUSE FALSE ALARMS. DO NOT TURN OFF THE AC
POWERTO QUIETTHE ALARM.A SMOKE ALARM WILL NOT HELP PROTECTYOU IF IT
IS NOT POWERED.Properly locate your alarm to avoid nuisance alarms.
• A SMOKE ALARM MAY NOT ALWAYS WARN YOU ABOUT FIRES CAUSED BY
CARELESSNESS AND SAFETY HAZARDS LIKE SMOKING IN BED, VIOLENT
EXPLOSIONS, ESCAPING GAS, IMPROPER STORAGE OF FLAMMABLE MATERIALS,
OVERLOADEDELECTRICAL CIRCUITS,CHILDREN PLAYINGWITH MATCHES,NATURAL
CAUSES SUCH AS LIGHTNING, OR ARSON. FIRE PREVENTION IS YOUR BEST
SAFEGUARD.
• SMOKE ALARMS CANNOT DETECT FIRES IF THE SMOKE DOES NOT REACH THEM.
Smoke from fires may not reach the sensing chamber and set off the alarm. One unit should
be installed inside each bedroom or sleeping area.
• SMOKE ALARMS MAY NOT DETECT FIRE ON ANOTHER FLOOR OR AREA OF THE
HOME. Recommended minimum protection is at least one unit in every sleeping area and
every bedroomon every levelof yourhome.Interconnectedunits mayprovide earlier warning
than stand-alone units since all units alarm when one detects smoke.
• ALARMS MAY NOT BE HEARD. The alarm horn in this unit meets or exceeds current
standards,butit maynot beheard if:(1) theunit is locatedoutside a closed or partially closed
door;(2) residents recently consumedalcohol ordrugs;(3) the alarm is drownedout bynoise
fromstereos,TV's, air conditioners or other appliances or (4)if residentsare hearing impaired
or sound sleepers.
• Because it is possible for the alarm to fail at any time, you must test the alarm weekly and
replace it every 5 years.

IMPORTANT SAFETY INFORMATION
About this Alarm
This combination alarm has separate sensors to detect smoke and carbon monoxide (CO).
The smoke alarm has priority over the CO alarm.
The combination smoke/CO alarm is desi ned to be used in ordinary indoor locations of
sin le-family households only.
The sensitivity of both the smoke and CO sensors and the horn patterns for both warnin s,
comply with UL standards.
This combination smoke/CO alarm can be used as a replacement for all USI ELECTRIC
Smoke and CO Alarms without additional wirin . This allows the user to easily up rade
from individual smoke or CO alarms to a combination unit.
WHAT YOU SHOULD KNOW ABOUT CARBON MONOXIDE (CO)
Carbon monoxide (CO) is an insidious poison. It is a colorless, odorless, tasteless as. It is
a cumulative poison. Even low levels of CO have been shown to cause brain and other vital
or an dama e in unborn infants with no effect on the mother.
The followin symptoms are related to CARBON MONOXIDE POISONING and should be
discussed with ALL members of the household:
MILD EXPOSURE
Sli ht headache, nausea, vomitin , fati ue (often described as "flu-like" symptoms).
MEDIUM EXPOSURE
Severe throbbin headache, drowsiness, confusion, fast heart rate.
EXTREME EXPOSURE
Unconsciousness, convulsions, cardiorespiratory failure, death.
Many cases of reported CARBON MONOXIDE POISONING indicate that victims are aware
they are not well, but they become so disoriented that they are unable to save themselves
by either exitin the buildin or callin for assistance. Youn children and household pets
may be the first affected.
Your combination smoke/CO alarm is desi ned to detect the toxic CO fumes that result
from incomplete combustion, such as those emitted from appliances, furnaces, fireplaces
and auto exhaust.
This alarm will only indicate the presence of carbon monoxide as surroundin its sensor.
Carbon monoxide as may be present in other areas.
This product is intended for use in ordinary indoor locations of family livin units. It is not
desi ned to measure compliance with Occupational Safety and Health Administration
(OSHA) commercial or industrial standards. Individuals with medical problems may consider
usin warnin devices which provide audible and visual warnin s for carbon monoxide
concentrations under 30 PPM.
WHAT YOU SHOULD DO IF THE CO ALARM SOUNDS
Never disconnect a combination Smoke/CO alarm to silence an alarm. The alarm will
automatically sense when the level of CO in the air falls below the dan er level. You should
stay outside the residence in fresh air until the alarm is silenced. When the alarm sounds,
do not stand too close to the alarm. The sound produced by the alarm is loud because it is
desi ned to awaken a person in an emer ency. Prolon ed exposure to the alarm at a close
distance may be harmful to your hearin .
Two self-adhesive labels have been provided with instructions indicatin what to do if the
CO alarm sounds. Add the phone numbers of your emer ency services provider and a
qualified technician to each label. Place one of the labels in a visible area next to the alarm
and place the other label near a source of fresh air which will be used as a atherin place
if the alarm sounds.
Pa e 2

WHAT YOU SHOULD DO IF THE SMOKE ALARM SOUNDS
YOU MUST QUICKLY DOTHE FOLLOWING:
If the smoke alarm sounds and you have not pushed the test button,it is a warning of a
dangerous situation.
Your immediate response is necessary.To prepare for such occurrences,develop family
escape plans, discuss them with ALL household members and practice them regularly.
BASICS OF ESCAPE PLAN
o Make a floor plan indicating all doors and windows and at least two escape routes from each
room.Second story windows may need a rope or chain ladder.
o Have a family meeting and discuss your escape plan, showing everyone what to do in case of
fire.
o Determine a place outside your home where all of you can meet if a fire occurs.
o Familiarize everyone with the sound of the smoke alarm and train them to leave your home when they
hearthesound.
o Identifychildren's bedroomswith redstickersplaced in the upper left cornerof the windows.They
are available from your local fire department.
o Practice a fire drill at least every six months. Practice allows you to test your plan before an
emergency.You may not be able to reach your children.It is important they know what to do!
WHATTO DOWHENTHE SMOKE ALARM SOUNDS
o Leave immediately by your plan of escape. Every second counts, so don't waste time getting
dressed or picking up valuables.
o In leaving, don't open any inside door without first feeling its surface.If hot, or if you see smoke
seepingthrough cracks,
don't open that door! Instead,useyour alternate exit.If inside dooris
cool,place yourshoulder againstit, openit slightlyand beready to slam it shutif heatand smoke
rush in.
o Stay close to the floor if air is smoky.Breathe shallowly through a cloth, wet if possible.
o Once outside, go to your selected meeting place and make sure everyone is there.
o Call the fire department from your neighbor's home –
not from yours!
o Don't return to your home until fire officials say that it is all right to do so.
Pa e 3
IMPORTANT CONSIDERATIONS
YOUR COMBINATION SMOKE/CO A ARM IS WARRANTED TO OPERATE
FOR FIVE YEARS.
NOTE: MANUFACTURER RECOMMENDS REP ACEMENT OF A ARM FIVE
YEARS AFTER DATE OF PURCHASE.
Activation of this device indicates the presence of carbon monoxide
(CO) which can kill you. If the CO alarm sounds:
1. Operate test/reset button;
2. Call your emer ency services, fire department or 911;
3. Immediately move to fresh air - outdoors or by an open door/window. Do a head count
to check that all persons are accounted for. Do not reenter the premises nor move
away from the open door/window until the emer ency services responders have arrived,
the premises have been aired out, and your alarm remains in its normal condition.
4. After followin steps 1-3, if your alarm reactivates within a 24 hour period, repeat steps
1-3 and call a qualified appliance technician; to
investi ate for sources of CO from fuel burnin equipment and appliances and inspect
for proper operation of this equipment. If problems are identified durin this inspection,
have the equipment serviced immediately. Note any combustion equipment not
inspected by the technician and consult the manufacturers' instructions or contact the
manufacturer(s) directly for more information about CO safety and this equipment.
Make sure that motor vehicles are not, and have not been, operatin in an attached
ara e or adjacent to the residence.
(Phone No. )
(Phone No. )

Pa e 4
INSTALLING THE COMBINATION SMOKE/CO ALARM
FOR RESIDENTIAL USE
OCATION
Before installin your combination smoke/CO alarm, it is important to choose the best
locations in your home. Placement can affect how well the alarm performs and how well
residents hear the alarm if it sounds. Statistics of the National Fire Protection Association
(NFPA) show that most of the fatal CO occurrences happen at ni ht while people are
sleepin .
Early warnin of CO is best achieved by the installation of CO alarms on all floors and
areas of the household.
RECOMMENDATIONS
 Put a CO alarm inside each bedroom where the occupant closes the door while sleepin .
Particulate smoke can be blocked by a closed door, but CO fumes are likely to et
throu h.
 A CO alarm should be installed between 5 and 20 feet from potential sources of CO in
any family livin unit containin a fuel-burnin appliance or fireplace or havin an attached
ara e.
 A combination smoke/CO alarm should be centrally located outside of each separate
sleepin area in the immediate vicinity of the bedrooms. Where bedrooms are separated
and audibility of the alarm to occupants within the bedroom area could be seriously
impaired, more than one unit could be needed.
 If a bedroom area hallway is more than 30 feet lon , install a smoke alarm at each end.
 Alarms can alert you to a problem only after smoke or CO reach their sensors. Choose
locations free of obstructions, where the alarm will stay clean and protected from adverse
environmental conditions.
 Install a smoke or combination alarm on the basement ceilin at the bottom of the stairwell.
 Make sure the alarms can be easily heard from multiple locations throu hout the home.
 This combination smoke/CO alarm makes it easy to provide both types of protection
throu hout the home.
 This combination smoke/CO alarm is desi ned to be used in sin le-family homes. It
alone may not meet requirements for multiple-resident dwellin s (apartment buildin s,
boardin houses, hotels or motels).
 Some codes may require that smoke alarms be interconnected in new construction.

Mobile Home Installation:
For minimum protection, smoke alarms should be installed in compliance with H.U.D. Manufactured
Home Construction Safety Standards, Title 24 CFR, Section 3280.208 and Section 3282. For additional
protection,see Single Story Residence smoke alarm requirements/recommendations for Existing Homes
and New Construction Homes.
Note: For mobile homes built before 1978, install smoke alarms on inside walls between 4” and 12” from
the ceiling (older mobile homes have little or no insulation in the ceiling).This is especially important if
the ceiling is unusually hot or cold.
Install a smoke alarm inside each bedroom and in the hallway outside each separate sleeping area.
Pa e 5
AVOID THESE LOCATIONS
• the garage – products of combustion are present when you start your automobile.
• in areas with high humidity, like bathrooms or areas near dishwashers or washing machines.
Install at least 3 feet (0.9 meters) away from these areas.
• in areas of turbulent air such as air returns or heating and cooling supply vents.Install at least 3
feet (0.9 meters) away from these areas.
• in extremely dusty, dirty or insect-infested areas. Loose particles interfere with smoke alarm
operation.
• in areas where temperature may fall below 400F (4.40C) or rise above 1000F (37.80C).
• closer than 5 feet (1.5m) from fluorescent lights, electrical "noise" and flickering may affect the
alarm'soperation.
• do not locate this alarm within 5 feet (1.5m) of any cooking appliance.
• in areas of reverse venting of fuel burning appliances caused by outdoor ambient conditions,
such as:
- wind direction and/or velocity, including high gusts of wind. Heavy air in the vent pipes (cold/
humid air with extended periods between cycles).
- negative pressure differential resulting from the use of exhaust fans.
- simultaneous operation of several fuel burning appliances competing for limited internal air.
- vent pipe connections vibrating loose from clothes dryers, furnaces or water heaters.
- obstructions in or unconventional vent pipe designs which can amplify the above situations.
- extended operation of unvented fuel burning devices (range, oven, fireplace, etc.).
- temperature inversions which can trap exhaust gasses near the ground.
- car idling in an open or closed attached garage or near a home.

THIS COMBINATION SMOKE/CO ALARMWILL NOTWORKWITHOUT 120VAC
POWER AND A GOOD BATTERY PROPERLYINSTALLED.THEALARMSHOULD
BE TESTED WHEN INSTALLED ANDTHEN TESTED WEEKLY AFTER THAT.
INSTALLATION AND OPERATION
INSTALLATION INSTRUCTIONS: CAUTION!! READ CAREFULLY.
CAUTION:THIS UNIT IS SEALED.THE COVER IS NOT REMOVABLE!
• This combination smoke/CO alarm requires constant 120 Volt AC power AND/OR a working
9Volt battery tooperateproperly.This combination smoke/CO alarmWILL NOTwork ifACpower
isnot connected or if ithas failedor beeninterruptedforanyreason AND the battery isremoved,
drained or improperly connected. DO NOT use any other kind of battery except as specified in
thismanual.
NOTE: AC/DC combination alarms offer added protection in the event of a power failure or a
drainedbattery.
•Test alarm immediately following installation andweeklyforproper operationbypushing the
test button.The alarm will then test itself for proper operation.The alarm then resumes normal
operation.
• A mounting plate is provided on the back of the alarm.
• Removethe mountingplate fromthe backofthe alarmbyholding themounting plateand twisting
the alarm in the direction indicated by the "TURNTO REMOVE" arrow on the side of the alarm
base.
Installation of this unit must conform to the electrical codes in your area; Article 760 of the
National Electrical Code, NFPA 720/CO Alarms, NFPA 72, 101; SBC (SBCCI); UBC (ICBO);
NBC (BOCA): OTFDC (CABO), and any other local or building codes that may apply.Wiring
andinstallation mustbe performedbyalicensed electrician.Failureto followthese guidelines
may result in injury or property damage.
This unit must be powered by a 24-hour,120V AC 60Hz circuit.Be sure the circuit cannot be
turned off by a switch,dimmer or ground fault circuit interrupter.Failure to connect this unit
to a 24-hour circuit may prevent it from providing constant protection.
IMPORTANT:Do not subject this alarm to megger, high voltage or high-pot tests.Remove the
alarm(s)beforehigh-potting tests occuron the circuitorsystem.(Ref.Section 550-17,National
Electric Code,2002 Edition).
Pa e 6
ELECTRICAL SHOCK HAZARD
Turn off power to the area where you will install this unit at the circuit breaker or fuse box
before beginning installation. Failure to turn off the power before installation may result in
serious electrical shock,injury or death.
TAMPER LOCKING PIN: To make your alarm somewhat tamper resistant, a locking pin has been
provided (break-away part of mounting plate).Using this tamper pin will deter children and others
fromremoving the alarm fromthe mounting plate.To use the tamper pin,insert it into the holein the
side of the alarm after the alarm has been installed on the mounting plate.Using long nose pliers,
pull the tamper pin out of the hole.It is now possible to remove the alarm from the mounting plate.
1. Turn the alarm counterclockwise in the direction indicated by the "TURNTO REMOVE" arrow
on the side of the alarm base to remove it from the mounting plate.NOTE:The alarm is sealed
and the cover is not removable.
2. Wiring Instructions:
a. Theappropriate powersupplyis120Voltsinglephase powersupplied from anon-switchable
circuit NOT protected by a ground fault circuit interrupter.
b. Turn off main power to the circuit before wiring the alarm.
c. There are three pigtail leads (black, white and yellow) coming from the AC QUICK
CONNECTOR.The proper wire connection is as follows:
WIRES FROM QUICK CONNECTOR CONNECTTO
BLACK "HOT" side of AC line
WHITE "NEUTRAL" side of AC line
YELLOW Interconnect wires of other units

For units that are used as single 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.
This alarm can share the interconnect wire of carbon monoxide,smoke and heat alarms.The
alarm will automatically sound a smoke alarm signal if smoke is detected by this unit or any
other interconnected smoke alarm,even if the unit is already detecting carbon monoxide and
sounding the carbon monoxide alarm signal.
Interconnected units can provide earlier warning of fire than stand-alone units,especially if a
fire starts in a remote area of the dwelling.This combination alarm may be interconnected
with as many as 11 other USI ELECTRIC model smoke alarms such as USI-1103, USI-1203,
USI-1204,USI-1209, USI-1213,USI-2204, USI-3204,USI-5204 and 6 other units which may be a
combination of Carbon Monoxide Alarms such as USI-7385, USI-7390, USI-7485, USI-7490,
HeatAlarms/USI-2430 orRelayModules/USI-960 for a totalof not more than 18 interconnected
devices.
Interconnected CO alarms will only respond if a CO alarm/event initiates the alarm.All other
alarms remain silent.
NOTE:Relay modules/USI-960 will not respond if a CO alarm/event initiates the alarm.
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 alarms remain silent.
NOTE:Units without battery backup will not respond during an AC power failure.
Pa e 7
The yellow wire is used only for multiple station operation with USI ELECTRIC Model alarms
only. Connecting this yellow wire to any other circuits may result in damage.When alarms
are interconnected, all units must be powered from a single AC branch circuit.If local codes
do not permit be sure the neutral wire is common to both phases.The maximum wire run
distance between the first and last alarm/device in an interconnected system is 1,000 feet.
NOTE: Use standard household wire (18 gauge or larger, rated at least 300V, as required by
local codes) available at all electrical supply/hardware stores.
3. Attach the mounting plate to the electrical junction box.
4. Plugthe ACQUICK CONNECTORinto thealarm base.Pushand turn thealarmclockwise onto
the mounting plate.
INPUT:
120 VAC
60 HZ
100 mA

Pa e 8
5. To activate9volt battery andalarm,hold battery drawerclosed, pull and removethe PULL-TAB.
Discard PULL-TAB.
6. See "TAMPER LOCKING PIN."
7. Turn on AC power and press the TEST/RESET button.Check the LED's for proper operation
(see "TESTING YOUR ALARM"). After test sequence, the Green LED lights to indicate AC
power and blinks off approximately every 20 seconds to indicate proper operation.
OPERATION,TESTING & MAINTENANCE
OPERATION:The alarm is operating once the power is connected and turned on (the battery must
also be installed).
SMOKE/COMBUSTION PRODUCTS ALARM CONDITION: When products of combustion are
sensed, the unit sounds a loud SMOKE alarm pattern which continues until the air is cleared. For
the SMOKE alarm pattern, this alarm incorporates the internationally recognized horn signal for
evacuation. During smoke alarm mode, the horn produces three beeps followed by a two second
pause and then repeats.
CARBON MONOXIDE CONDITION: When CO is sensed at a high level or at a low level for a
lengthy period of time, the unit sounds a loud CO alarm pattern (4 short horn pulse, pause, repeat)
whichcontinuesuntil theair is clearedor thealarmis reset.TheRed LEDwill flashonsimultaneously
with the horn pulses.
SERVICE/TROUBLE CONDITION:Periodically,thealarm's circuitry istested.Ifan erroris detected,
the alarm will sound a double "beep" and theYellow LED will flash on twice approximately every 40
seconds. If this occurs, reset your alarm (see "RESETTING YOUR ALARM"). If the SERVICE/
TROUBLE signal persists, it is an indication of circuit malfunction and that the alarm requires
immediateservicing.
TESTING YOUR ALARM: Test alarm weekly for proper operation by pushin , then releasin , the
TEST/SILENCE button. The alarm will then test itself for proper operation of BOTH the SMOKE and
CO detection and alarm circuits. The Red LED will be in to flash rapidly and the alarm will indicate
two cycles of the SMOKE alarm pattern. The Red LED will stop flashin durin the second SMOKE
alarm pattern. This will be followed by two cycles of the CO alarm pattern, durin which the Green
LED is off, the Yellow LED is on and the Red LED flashes on simultaneously with the horn pulses.
RESETTING YOUR ALARM: To reset your alarm, initiate the Test cycle per TESTING YOUR ALARM
above. While the alarm is indicatin the CO alarm patterns of the Test Cycle, press the TEST/
SILENCE button a ain and HOLD it until the Test Cycle is completed (when the Yellow LED turns
off, approximately 5 seconds).
STANDBY (NON-ALARM) CONDITION: Whenever AC power is present, the Green LED is on and
blinks off approximately every 20 seconds and the Red LED is off and flashes on every 40 seconds.
If powered by the backup battery (DC) only, both the Green and the Red LED's are off and flash on
every 40 seconds.
LOCAL (ORIGINATING ALARM) CONDITION: For BOTH the SMOKE and CO alarm conditions,
the Red LED flashes on rapidly and the unit emits a loud, pulsatin alarm (refer to the OPERATION
section to differentiate between the SMOKE and CO alarm patterns).
REMOTE (NON-ORIGINATING ALARM) CONDITION: For BOTH the SMOKE and CO alarm
conditions, the Red LED is off and the unit emits a loud, pulsatin alarm (refer to the OPERATION
section to differentiate between the SMOKE and CO patterns).
INITIATING ALARM INDICATOR (IAI) CONDITION: Whenever a unit comes out of the LOCAL
ALARM CONDITION, it will display an IAI until manually reset (see "RESETTING YOUR ALARM").
If the unit indicated a SMOKE alarm, the IAI is the Red LED flashin on for 1 second every 5
seconds. If the unit indicated a CO alarm, the IAI is the Green LED which flashes on for 1 second,
then off for 1 second and then repeats this cycle until it is manually reset (see "RESETTING YOUR
ALARM").

NEVER use an open flame of any kind to test this unit.You might accidentally damage or set
fire to the unit or to your home.The built-in test switch accurately tests the unit's 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 alarm's sensitivity.
Before using the alarm "test/silence" feature, identify the source of smoke or CO and be
certain that safe conditions exist.
FALSE ALARMS "TEST/SILENCE" CONTROL:Units withthe "silence"featurehavethecapability
oftemporarily reducing the sensitivity ofthe smokealarm circuit for approximately3-9 minutes.This
feature is to be used only when a known alarm condition such as smoke from cooking activates the
smoke alarm.The smoke alarm "silence" feature is activated by pushing the Test/Silence button on
thesmokealarm coverforatleast threeseconds.Thesmokealarmwillautomatically reduce sensitivity
and the Red LED will light for approximately 3-9 minutes to indicate the alarm is in the temporary
silent condition. The smoke alarm will gradually regain normal sensitivity and sound the alarm if
particles of combustion are still present.The "silence" feature may be used repeatedly until the air
has cleared.
When AC power is lost, the Green LED is off and flashes on approximately every 40 seconds.
ELECTRICAL SHOCK HAZARD:Turn off power at main service panel by removing fuse or
switching appropriate circuit breaker to OFF position before replacing battery or cleaning
smoke and CO alarm.
MAINTENANCE: This combination alarm is virtually maintenance free. However, under dusty
conditions, a vacuum hose may be used to clear the sensing chamber of dust.
Clean the alarm at least once a month to remove dust, dirt or debris. Always turn off power to
alarm before cleaning. Using a soft brush or wand attachment to a vacuum cleaner, vacuum all
sides and cover of alarm.Be sure all the vents are free of debris.
The outside of the alarm can be wiped with a damp cloth. Do not use any household cleaning
agents, ammonia-based cleaners, paints, varnishes or any other chemical on or near your alarm.
AFTER CLEANING, REINSTALL YOUR ALARM. TEST YOUR ALARM BY USING THE TEST
BUTTON.
If the smoke/CO alarm is false alarming or indicating service and cannot be restored to normal
operation, the alarm should be replaced.
Pa e 9

NATIONAL FIRE PROTECTION ASSOCIATION REQUIRED PROTECTION
For your information, the National Fire Protection Association's Standard 72, reads as follows:
"2-2.1.1.1 Smokedetectors shall beinstalled outside ofeach separatesleeping areain
the immediate vicinity of the bedrooms and on each additional story of the family living
unit including basements and excluding crawl spaces and unfinished attics. In new
construction, a smoke detector shall be installed in each sleeping room."
"A-2.5.2.1 Smoke Detection - Are More Smoke Detectors Desirable? The required
numberof smokedetectors might not providereliableearly warning protection forthose
areas separated by a door from the areas protected by the required smoke detectors.
For this reason, it is recommended that the householder consider the use of additional
smoke detectors for those areas for increased protection.The additional areas include
the basement, bedrooms, dining room, furnace room, utility room, and hallways not
protectedbytherequiredsmokedetectors.Theinstallationofsmokedetectorsin kitchens,
attics(finishedorunfinished),or garagesisnotnormally recommended,astheselocations
occasionally experience conditions that can result in improper operation."
The equipment should be installed in accordance with the National Fire Protection Association's
Standard 72.(National Fire Protection Association, Batterymarch Park, Quincy, MA 02269).
THIS PRODUCT IS ISTED TO U STANDARDS FOR SAFETY,
U 2034 AND U 217 5TH EDITION, BY UNDERWRITERS ABORATORIES.
BACKUP BATTERY REPLACEMENT
Disconnect AC power before changing battery.Shock hazard exists if AC power is miswired.
This alarm uses a 9 Volt Alkaline battery.The battery should last for at least one year under normal
operating conditions.The alarm has a low battery indicator, an audible "beep." It will operate at 30-
40 second intervals for a minimum of 7 days.When this indication occurs, replace the battery with
anAlkaline type (EvereadyEnergizer#522,Duracell #MN1604),or Lithiumtype(ULTRALIFE U9VL-
J), from your local retailer.
Pullthe battery draweropen andremovethebattery.While observing polarity,push thereplacement
battery into the battery drawer until it is held securely in place.Carefully close the battery drawer.
Use only the batteries specified.Use of different batteries may have a detrimental effect on
the alarm.The constant exposures to high or low temperatures or high humidity may reduce
battery life.
When battery door is open,the battery will not power the alarm even if the battery is properly
installed.If AC power for the alarm is disconnected, interrupted or not present for any reason,
the battery backup will not power the alarm and your protection will be removed.
Do not attempt to repair this combination alarm.Doing so will void your warranty.
REPAIRS AND SERVICES
Thesmokealarm contains less than 1 microcurie(37 kilobecquerel)of Americium241, aradioactive
material.The distribution ofthese ionization typesmoke alarms islicensed bytheU.S.Nuclear
Regulatory Commission; the consumer is exempt from any licensing or requirements. If the
smoke alarm is defective in any way, do not tamper with the unit.Return the unit for servicing. (See
warranty for instructions or in-warranty returns.) There will be a service charge for repairing out of
warrantyunits.
Pa e 10

288-3309-00 ©2003, USI ELECTRIC, INC. Printed in China
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USI FIVE YEAR IMITED WARRANTY
USI E ECTRIC, INC. ("USI") warrants your USI product to be free
from defects in material and workmanship for a period of five (5)
years from the date of purchase. This warranty applies only to the
ori inal consumer purchaser and only to products used in normal
residential use and service. If this product is found to be defective, USI's
only obli ation, and your exclusive remedy, is the repair or replacement
of the product, at USI's discretion, provided that the product has not
been dama ed throu h misuse, abuse, accident, modifications, alteration,
ne lect or mishandlin . This Warranty shall not apply to any product
which is found to have been improperly installed, set-up, or used in any
way not in accordance with the instructions supplied with the product.
This warranty shall not apply to any batteries used in the product or to
any dama e which may be caused by such batteries. For repair or
replacement, send the defective product to USI ELECTRIC, INC. at 7-A
Gwynns Mill Court, Owin s Mills, Maryland 21117, posta e prepaid with
a payment of $10.00 to cover the costs of return posta e and handlin .
You must include a proof of purchase (receipt) alon with the returned
product.
USI DOES NOT WARRANT AND SPECIFICA Y DISC AIMS ANY
WARRANTY, WHETHER EXPRESS OR IMP IED, OF FITNESS FOR
A PARTICU AR PURPOSE, OTHER THAN THE WARRANTY
CONTAINED HEREIN. NO IMP IED WARRANTY ON THIS PRODUCT,
CREATED BY STATE AW, SHA EXTEND BEYOND THE TERM
OF THIS WARRANTY UN ESS SUCH AW OTHERWISE PROVIDES.
USI SPECIFICA Y DISC AIMS ANY IABI ITY AND SHA NOT
BE IAB E FOR ANY CONSEQUENTIA OR INCIDENTA OSS OR
DAMAGE, INC UDING, BUT NOT IMITED TO, DAMAGES TO ANY
EQUIPMENT WITH WHICH THIS PRODUCT IS USED.
Some states do not allow the exclusion or limitation of incidental or
consequential dama es so the above limitations or exclusions may not
apply to you.
No a ent, representative, dealer, or employee of the company has the
authority to increase or alter the obli ations or terms of this Warranty.
This Warranty ives you specific le al ri hts and you may also have
other ri hts which vary from state to state.
This Warranty is only valid for merchandise purchased from outlets in
the United States and Canada.