Kidde TRUSENSE 3050-VASC10 User manual

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TRUSENSE SMOKE/CO COMBO
User Guide
Combination Multi-Criteria Optical Sensor Smoke & Carbon Monoxide Alarm
with Voice and Hardwire Interconnect
Model 3050-VASC10
120V HARDWIRE INTERCONNECT
10YEAR BATTERY BACKUP
VOICE ALARM
COMBINATION ALARM
P/N: 2573-7201-01 Rev B
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Advanced Smoke Detection Technology
SENSE
10 YEAR SMOKE AND
CARBON MONOXIDE ALARM
Helps Reduce Cooking
Nuisance Alarms
UL 217 8th Ed.

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Thank You for Purchasing this Kidde Alarm
Hardwired for 120VAC, this model features a non-replaceable, sealed-in battery backup. It also con-
tains a voice message system and SMART HUSH® Control to temporarily silence nuisance alarms.
Teach children how to respond to the alarm and that they should never play with the unit. This alarm is a
multi-criteria device designed to detect both smoke and carbon monoxide from any source of combus-
tion in a residential environment. It is not designed for use in a recreational vehicle (RV) or boat.
NOTE: Please thoroughly read this user guide and save the document for future reference and to
pass on to any subsequent owner.
The National Fire Protection Association (NFPA) and
the manufacturer recommend replacing this alarm
ten years from the date code on back of alarm.
Date Code (on back): ___________________
Date of Purchase: ___________________
Where Purchased: ___________________
Date to Replace: ___________________
Product Support: 1-800-880-6788
Please write down the below information
and have this at hand when you call.

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Contents
1. Smoke Alarm: What To Do When The Alarm Sounds . . . . . . . . . . . . 4
2. Carbon Monoxide Alarm: What To Do When The Alarm Sounds . . . . . . . . 5
3. Other Alarm Visual And Audible Indicators . . . . . . . . . . . . . . . 6
4. Troubleshooting Guide . . . . . . . . . . . . . . . . . . . . . . . 7
5. Introduction, Product Features And Specifications . . . . . . . . . . . . . 8
6. Limitations Of Smoke And Carbon Monoxide Alarms . . . . . . . . . . . . 9
7. Recommended Locations For Smoke And Carbon Monoxide Alarms . . . . . . 11
8. Locations To Avoid. . . . . . . . . . . . . . . . . . . . . . . . . 14
9. Wiring / Installation / Activation . . . . . . . . . . . . . . . . . . . 15
10. Operation And Testing . . . . . . . . . . . . . . . . . . . . . . . 20
11. Recognizing Nuisance Alarms . . . . . . . . . . . . . . . . . . . . 21
12. Battery Back Up . . . . . . . . . . . . . . . . . . . . . . . . . 22
13. Permanently Disable Alarm / Discharge Battery . . . . . . . . . . . . . 23
14. General Carbon Monoxide (CO) Information . . . . . . . . . . . . . . 24
15. Cleaning Your Alarm . . . . . . . . . . . . . . . . . . . . . . . . 26
16. Good Safety Habits . . . . . . . . . . . . . . . . . . . . . . . . 27
17. Service And Warranty . . . . . . . . . . . . . . . . . . . . . . . 30

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1. Smoke Alarm: What To Do When The Alarm Sounds
The smoke alarm pattern is three long beeps with voice “Fire!,” a 1.5 second pause, and three long beeps repeating.
The red LED blinks in time with the alarm pattern only on the alarm(s) that detected the hazard (initiating alarm).
•Alert small children in the home as well as anyone else that might have difficulty recognizing the
importance of the alarm sounding or that might have difficulty leaving the area without help.
•Leave immediately by your escape plan. Every second counts, so don’t waste time getting dressed or
picking up valuables.
•While leaving, don’t open any inside door without first feeling its surface. If hot, or if you see smoke seeping
through cracks, don’t open that door! Instead, use your alternate exit. If the inside of the door is cool, place
your shoulder against it, open it slightly and be ready to slam it shut if heat and smoke rush in.
•If the escape route requires you to go through smoke, stay close to the floor where the air is cleaner.
Crawl if necessary, and breathe shallowly through a cloth, wet if possible.
•Once outside, go to your selected meeting place and make sure everyone is there.
•Call the fire department or 911 from your cell phone outside, or from your neighbor’s home-not from yours!
•Don’t return to your home until the fire officials say that it is all right to do so.
NOTE: See Section RECOGNIZING NUISANCE ALARMS, for nuisance alarm situations.

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2. Carbon Monoxide Alarm: What To Do When The Alarm Sounds
The carbon monoxide (CO) alarm pattern is four quick beeps with voice “Warning! Carbon Monoxide”
repeating every 5 seconds. The red LED blinks in time with the alarm pattern. On DC power, after 4 minutes
in CO alarm the alarm pattern and voice will only occur every 60s.
WARNING: ACTUATION OF YOUR CO ALARM INDICATES THE PRESENCE OF CARBON
MONOXIDE CO WHICH CAN KILL YOU. IF ALARM SIGNAL SOUNDS:
1 Operate the Test/Hush® button. NOTE: Pressing the button on the alarming unit will silence the
alarm notification. If the unit goes into alarm mode again within six minutes, it is sensing high levels of
CO which can quickly become a dangerous situation.
2 Call your emergency services (Fire Department or 911). EMERGENCY PHONE #:___________
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. Alert small children in the home as well as anyone else that might
have difficulty recognizing the importance of the alarm sounding or that might have difficulty leaving
the area without help. Do not reenter the premises or move away from the open door/window until the
emergency services responders have arrived, the premises have been aired out, and your alarm remains
in its normal condition.
4 After following steps 1-3, if the alarm reactivates within a 24 hour period, repeat steps 1-3 and call a
qualified appliance technician to investigate sources of CO from fuel burning equipment and appliances,
and to inspect for proper operation of equipment.
If problems are identified during this inspection, have the equipment serviced immediately. Note any
combustion equipment not inspected by the technician and consult the manufacturer’s instructions,
or contact the manufacturer directly for more information about CO safety and the equipment. Make
sure that motor vehicles are not, or have not been, operating in a garage attached or adjacent to the
residence. Never restart the source of a CO problem until it has been corrected. Never ignore the sound
of the alarm!
NOTE: See Section RECOGNIZING NUISANCE ALARMS, for nuisance alarm situations.

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3. Other Alarm Visual And Audible Indicators
If you require further information please contact Product Support at 1-800-880-6788 or write us at:
Kidde, 1016 Corporate Park Drive, Mebane, NC 27302. Our internet address is www.kidde.com.
Operational Mode Visual Indications Audible Indications Action/Note
Normal (standby) AC power: Green LED on
continuously.
DC power: Green LED blink
approx every 60 sec.
Test (button press
when no alarm condi-
tion is present)
(Note: Test is very loud,
stand a few feet away.)
Red LED blinks in time with
alarm pattern.
• Single beep.
•3 long beeps, voice "Fire!", 3 long
beeps, 4 quick beeps, Voice
"Warning, Carbon Monoxide,"
4 quick beeps.
Perform button press once a week
to verify proper alarm operation.
Smoke or CO Alarm
Memory (unit has
experienced a smoke
or CO alarm event, or
has detected 100ppm
CO or greater.)
Red LED blink every 16 sec. After button push, voice “Smoke
previously detected" or "Carbon
Monoxide previously detected.”
NOTE: On DC power, alarm mem-
ory is only retained for 24 hrs.
Push button to clear Alarm
Memory.
Smoke Alarm Hush®
Mode (SMART Hush®
CONTROL)
Red LED blinks every 2 sec. After button push, voice “Hush
Mode Activated." Smoke alarm
pattern stops. (If there is too much
smoke to allow
Hush® : voice "Too Much Smoke,
Cannot be Hushed”, Smoke alarm
pattern continues.)
This feature is to be used only
when a known alarm condition,
such as smoke from cooking,
activates the alarm.
CO alarm reset None After button push: CO alarm
pattern stops.
Unit is conrming if CO is present
or if it experienced a nuisance
situation. Re-alarm means danger.
Move to fresh air and call 911.
Initiating Alarm
(multiple alarms in
an interconnected
system)
Red LED blinks in time with
alarm pattern indicating that
this is the unit initiating the
alarm in an interconnected,
multiple alarm, system.
NOTE: It is possible for more
than one unit to detect a haz-
ard and become an initiating
alarm unit (Red LED blinking).
Unit in either Smoke or CO alarm
mode.

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4. Troubleshooting Guide
3. Other Alarm Visual And Audible Indicators
Trouble Condition Visual Indications Audible Indications Action
False Low Battery
(AC power
connected before
backup battery
activated)
Amber LED blinks
every 5 sec.
Chirp and voice “Activate
Battery” every 60 sec.
* Rotate the alarm onto the
mounting bracket to activate backup
battery.
Low Battery
AC Power: Amber LED
blinks every 5 sec.
DC Power: Amber LED
blinks every 60 sec.
Chirp and voice “Replace alarm”
every 60 sec. (After 1 hour
on DC power, voice occurs
only once every 15 mins.)
Voice “Hush mode activated”
after button push (rst 7 days
only).
* Push button once to silence for 24
hrs. (Push button again to clear Hush
and perform a test.)
Note: 7 days after Low Battery begins,
the notications cannot be silenced.
* Remove, discharge, dispose unit, and
replace as soon as possible.
Fault: Smoke
Sensor Error
AC Power:
Amber LED blinks
every 5 sec.
DC Power:
Amber LED blinks
every 30 sec
Chirp every 30 sec, voice
“Smoke Sensor Error” every
60 sec.
(After 1 hour on DC power,
voice occurs only after button
is pushed.)
* See Cleaning Your Alarm section.
* Push button once to attempt to reset
the unit.
* If error continues, remove,
discharge, dispose unit, and replace
as soon as possible.
Fault: CO Sensor
Error
Chirp every 30 sec, voice
“CO Sensor Error” every 60 sec.
(After 1 hour on DC power,
voice occurs only after button
is pushed.)
* Push button once to attempt to reset
the unit.
* If error continues, remove,
discharge, dispose unit, and replace
as soon as possible.
Fault: Memory
Error
Chirp every 30 sec, voice
“Memory Error” every 60 sec.
(After 1 hour on DC power,
voice occurs only after button
is pushed.)
* Push button once to attempt to reset
the unit.
* If error continues, remove,
discharge, dispose unit, and replace
as soon as possible.
End of Unit Life
AC Power: Amber LED
blinks twice every
5 sec.
DC Power: Amber
LED blinks twice every
30 sec.
AC Power: Chirp twice every
30 sec, voice “Replace Alarm.”
DC Power: Chirp twice every
30 sec, voice every 60 sec for
rst hour, then every 15 min.
Voice “Hush mode activated”
after button push (rst 7 days
only).
* Push button once to silence for 24
hrs. (Push button again to clear Hush
and perform a test.)
Note: 7 days after End of Unit Life begins,
the notications cannot be silenced.
* Remove, discharge, dispose unit, and
replace as soon as possible.

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5. Introduction, Product Features And Specifications
Introduction
This alarm detects products of combustion using a multi-criteria optical sensor and carbon monoxide using an
electrochemical cell. Many times throughout this User Guide, we will refer to Carbon Monoxide as “CO.”
Ten (10) years after the unit was installed, this unit will automatically alert you that it is time to replace the unit.
This is called “End of Unit Life” mode. See Troubleshooting Guide. To help identify the date to replace the unit, a
label has been affixed to the side of the alarm. Write the “Install date” in the space provided, and then write in
the “Replace by” date (10 years from initial power up) in permanent marker on the label prior to installing the unit.
NOTE: AC power must be connected to obtain the full 10 year battery and unit life. Two labels have been
provided that have important information on what to do in case of a CO alarm. Place one label at eye level on a
wall near the alarm after it is mounted, and one near a fresh air source such as a door or window.
Product Features and Specifications:
•Temperature Operating Range: 40°F (4.4°C) to 100°F (37.8°C)
•Humidity Operating range: 10-95% RH non-condensing
•Audible Alarm: 85+ dB at 10’, 3.0 to 3.5 KHz pulsing alarm, with voice messages
“Fire!” and/or “Warning! Carbon Monoxide.”
•Smoke Sensor: Multi-Criteria Optical
•CO Sensor: Electrochemical
•Voice message system
•Smoke Alarm SMART Hush® Control
•Powered by 120VAC (60 Hz, 35 mA max) wire-in connector with sealed lithium battery backup.
•Hardwire interconnectable to other compatible alarms.
•One large, user- friendly button.

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6. Limitations Of Smoke And Carbon Monoxide Alarms
WARNING: PLEASE READ CAREFULLY AND THOROUGHLY
•Life safety from fire in residential occupancies is based primarily on early notification to occupants of the need to
escape, followed by the appropriate egress actions by those occupants.
•There are situations where a smoke alarm may not be effective to protect against fire as stated in the NFPA
Standard 72. For instance:
a) smoking in bed
b) leaving children home alone
c) cleaning with flammable liquids, such as gasoline
•Fire warning systems for dwelling units are capable of protecting about half of the occupants in potentially fatal
fires. A smoke alarm may not be effective in some situations, such as during incendiary fires where the fire grows so
rapidly that an occupant’s egress is blocked even with properly located smoke alarms, or when victims are intimate
with the fire (for example, when a person’s clothes catch fire while cooking), too old or young, or physically or
mentally impaired such that they cannot escape even when warned early enough that escape should be possible.
For these people, additional strategies such as protection-in-place or assisted escape or rescue are necessary.
•For maximum detection of the various types of fires that can occur within the home, including fast flaming and
slow smoldering, it is recommended that multi criteria smoke alarms be installed. This model meets the latest
residential smoke alarm standards, which includes enhanced resistance to nuisance alarms from cooking.
•A battery powered alarm must have a battery of the specified type, in good condition and installed properly (this
model has a sealed battery).
•Smoke alarms must be tested regularly to make sure the battery and the alarm circuits are in good operating
condition.
•Smoke alarms cannot provide an alarm if smoke does not reach the alarm. Therefore, smoke alarms may not sense
fires starting in chimneys, within walls, on roofs, on the other side of a closed door or other obstruction.
•If the alarm is located outside the bedroom or on a different floor, it may not wake up a sound sleeper.
•The use of alcohol or drugs may also impair one’s ability to hear the smoke alarm. For maximum protection, a
smoke alarm should be installed in each sleeping area on every level of a home.
This alarm is not intended to alert hearing impaired individuals.

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WARNING: PLEASE READ CAREFULLY AND THOROUGHLY
•IMPORTANT: This alarm is designed to detect carbon monoxide gas from ANY source of combustion. It is
NOT designed to detect any other gas.
CAUTION: This alarm will only indicate the presence of carbon monoxide gas at the sensor. Carbon
monoxide gas may be present in other areas. Never restart the source of a CO problem until it has been
fixed. NEVER IGNORE THE ALARM!
WARNING: THIS PRODUCT IS INTENDED FOR USE IN ORDINARY INDOOR LOCATIONS OF
FAMILY LIVING UNITS. IT IS NOT DESIGNED TO MEASURE COMPLIANCE WITH OCCUPATIONAL
SAFETY AND HEALTH ADMINISTRATION OSHA COMMERCIAL OR INDUSTRIAL STANDARDS. IT
IS NOT SUITABLE FOR INSTALLATION IN HAZARDOUS LOCATIONS AS DEFINED IN THE NATIONAL
ELECTRIC CODE. IT IS NOT DESIGNED FOR USE IN A RECREATIONAL VEHICLE RV OR BOAT.
•The installation of this device should not be used as a substitute for proper installation, use, and mainte-
nance of fuel burning appliances, including appropriate ventilation and exhaust systems.
•This alarm does not prevent CO from occurring, nor can it solve any existing CO problem.
WARNING: THIS DEVICE IS DESIGNED TO PROTECT INDIVIDUALS FROM ACUTE EFFECTS OF
CARBON MONOXIDE EXPOSURE. IT MAY NOT FULLY SAFEGUARD INDIVIDUALS WITH SPECIFIC
MEDICAL CONDITIONS. IF IN DOUBT, CONSULT A MEDICAL PRACTITIONER. INDIVIDUALS WITH
MEDICAL PROBLEMS MAY CONSIDER USING WARNING DEVICES WHICH PROVIDE AUDIBLE AND
VISUAL SIGNALS FOR CARBON MONOXIDE CONCENTRATIONS UNDER 30 PPM.
•This alarm has not been investigated for carbon monoxide detection below 70 PPM.
•This combination smoke and carbon monoxide alarm requires a continuous supply of electrical
power – it will not work without power.

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7. Recommended Locations For Smoke And Carbon Monoxide
Alarms
•Locate smoke alarms in all sleeping areas. Try to monitor the exit path as the bedrooms are usually farthest
from the exit. If more than one sleeping area exists, locate additional alarms in each sleeping area.
•Locate additional alarms in stairways, because stairways act like chimneys for smoke and heat.
•Locate at least one alarm on every floor level.
•Locate an alarm in every bedroom.
•Locate an alarm in every room where electrical appliances are operated (i.e. portable heaters or humidifiers).
•Locate an alarm in every room where someone sleeps with the door closed. The closed door may prevent
an alarm not located in that room from waking the sleeper.
•Smoke, heat, and combustion products rise to the ceiling and spread horizontally. Mounting the smoke
alarm on the ceiling in the center of the room places it closest to all points in the room. Ceiling mounting is
preferred in ordinary residential construction.
ANYWHERE ALONG
THIS BOLD SURFACE
Locations permitted for smoke
alarms and smoke detectors
on tray-shaped ceilings.
Not within 6 feet of appliances
ACCEPTABLE
TOP OF ALARM
ACCEPTABLE HERE
Note: measurements shown
are to the closest edge
of the alarm.
Figure 7-A
ACCEPTABLE
TOP OF DETECTOR
ACCEPTABLE HERE
Note: measurements shown
are to the closest edge
of the detector.
ANYWHERE ALONG
THIS BOLD SURFACE
Locations permitted for smoke
alarms and smoke detectors
on tray-shaped ceilings.

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ANYWHERE ALONG
THIS BOLD SURFACE
Locations permitted for smoke
alarms and smoke detectors
on tray-shaped ceilings.
Not within 6 feet of appliances
ACCEPTABLE
TOP OF ALARM
ACCEPTABLE HERE
Note: measurements shown
are to the closest edge
of the alarm.
ANYWHERE ALONG
THIS BOLD SURFACE
Locations permitted for smoke
alarms and smoke detectors
on tray-shaped ceilings.
Not within 6 feet of appliances
ACCEPTABLE
TOP OF ALARM
ACCEPTABLE HERE
Note: measurements shown
are to the closest edge
of the alarm.
ANYWHERE ALONG
THIS BOLD SURFACE
Locations permitted for smoke
alarms and smoke detectors
on tray-shaped ceilings.
Not within 6 feet of appliances
ACCEPTABLE
TOP OF ALARM
ACCEPTABLE HERE
Note: measurements shown
are to the closest edge
of the alarm.
ANYWHERE ALONG
THIS BOLD SURFACE
Locations permitted for smoke
alarms and smoke detectors
on tray-shaped ceilings.
Not within 6 feet of appliances
ACCEPTABLE
TOP OF ALARM
ACCEPTABLE HERE
Note: measurements shown
are to the closest edge
of the alarm.
NFPA 72 states: “Smoke alarms in rooms with ceiling slopes greater than 1 ft in 8 ft (.3m in 2.4 m) horizontally shall
be located on the high side of the room.” NFPA 72 states: “A row of detectors shall be spaced and located within 3
ft (0.9m) of the peak of the ceiling measured horizontally.”
Figure 7-B Figure 7-C

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•For mobile home installation, select locations carefully to avoid thermal barriers that may form at the ceiling.
For more details, see MOBILE HOME INSTALLATION section.
•When mounting the alarm on the wall, use an inside wall with the top edge of the alarm at a maximum
of 12” (30.5 cm) below the ceiling.
•Put smoke alarms at both ends of a bedroom hallway or large room if the hallway or room is more than 30
feet (9.1 m) long.
•Install Smoke Alarms on sloped, peaked or cathedral ceilings at or within 3ft (0.9m) of the highest point
(measured horizontally).
•Industry experts recommend a CO alarm be installed on each level of the home-ideally on any level with
fuel burning appliances and outside of sleeping areas.
This equipment should be installed in accordance with the National Fire Protection Association’s 72 (National Fire
Protection Association, Batterymarch Park, Quincy, MA 02269).
Mobile Home Installation
Modern mobile homes have been designed and built to be energy efficient. Install smoke alarms as recom-
mended above. In older mobile homes that are not well insulated compared to present standards, extreme heat
or cold can be transferred from the outside to the inside through poorly insulated walls and roof. This may create
a thermal barrier which can prevent the smoke from reaching an alarm mounted on the ceiling. In such units,
install the smoke alarm on an inside wall with the top edge of the alarm a maximum of 12” (30.5 cm) below the
ceiling.
If you are not sure about the insulation in your mobile home, or if you notice that the outer walls and ceiling are
either hot or cold compared to the room air temperature, install the alarm on an inside wall. NFPA 72 (National
Fire Protection Association) requires smoke alarms be installed in each sleeping area.
WARNING: TEST YOUR ALARM OPERATION AFTER MOBILE HOME HAS BEEN IN STORAGE OR
UNOCCUPIED, AND AT LEAST ONCE A WEEK DURING USE.

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8. Locations To Avoid
(See Figures 7-A, 7-B, & 7-C for recommended locations)
•In the garage. Products of combustion are present when you start your automobile.
•Normal cooking may cause nuisance alarms. If a kitchen alarm is desired, it should have an alarm silence
feature and should not be installed within 6 ft of cooking appliances.
•Do not install within 6 ft of heating appliances.
•Less than 4” (10cm) from the peak of an “A” frame type ceiling.
•In an area where the temperature may fall below 40ºF or rise above 100ºF, such as garages and unfinished
attics.
•In dusty areas. Dust particles may cause nuisance alarms or a failure to alarm.
•In very humid areas (above 95% RH, non-condensing) as moisture or steam can cause nuisance alarms.
•In insect-infested areas.
•Smoke alarms should not be installed within 3 ft (.9m) of the door to a bathroom containing a tub or show-
er, forced air supply ducts used for heating or cooling, ceiling or whole house ventilating fans, or other high
air flow areas.
•Near lights. Electronic “noise” generated by the lights may cause nuisance alarms.
•Do not install near vents, flues, or chimneys.
•Do not install near fans, doors, windows or areas directly exposed to the weather.

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9. Wiring / Installation / Activation
NOTE: To avoid false low battery chirping (model will also announce
“Activate Battery”) one of the following steps must be taken to ensure
activation: (Battery activation is confirmed with a beep and voice
“Push Test Button.”)
A. Locate the red wheel on the back of the unit - turn the red wheel to
the “ON” position using the included white activation tool or a
standard screwdriver. Battery will remain active to allow for installation on mounting bracket.
B. Orient the unit with LED pointing to the right as shown in Figure 9-B, and rotate the unit a full 90 degrees
clockwise onto the mounting bracket. To allow for installation, battery will remain active when unit is removed
from mounting bracket.
Figure 9 -B
Install Remove
Mounting Bracket
Note orientation
of "A" line.
LED
To ensure aesthetic alignment,
install the unit onto the mounting
bracket as shown, and rotate fully
90 degrees clockwise.
USE ACTIVATION
TOOL OR SCREWDRIVER
ON
Break
tab
This alarm is not compatible
with Kidde CO-relays
and Strobes manufactured
before Nov. 1, 2011
PERMANENTLY
DISABLE and
DISCHARGE
ALARM
(2) Rotate slotted
arrow clockwise to
disable & discharge.
(3) Install new alarm.
(1) Push in the dashed
area with a screwdriver
to break tab.
When unit
announces
“Replace alarm”
CERTIFIED
SAFETY
SIGNALING
US
S1816
Multi-criteria Smoke Alarm
Helps Reduce
Cooking
Nuisance Alarms
UL 217 8
th
Ed.
Figure 9 -A

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Wiring Requirements
•This alarm should be installed on a UL Listed or recognized junction box. All connections should be made
by a qualified electrician and all wiring used shall be in accordance with articles 210 and 300.3(B) of the U.S.
National Electrical Code ANSI/NFPA 70, NFPA 72 and/or any other codes having jurisdiction in your area.
The multiple station interconnect wiring to the alarms must be run in the same raceway or cable as the AC
power wiring. In addition, the resistance of the interconnect wiring shall be a maximum of 10 ohms.
•The maximum wire run distance between the first and last unit in an interconnected system is 1000 feet.
•The appropriate power source is 120 Volt AC Single Phase supplied from a non-switchable circuit.
•Smoke alarms are not to be used with detector guards unless the combination (alarm and detector guard)
has been evaluated and found suitable for that purpose.
WARNING: THE ALARM CANNOT BE OPERATED FROM POWER DERIVED FROM A SQUARE
WAVE, MODIFIED SQUARE WAVE OR MODIFIED SINE WAVE, INVERTER. THESE TYPES OF INVERT
ERS ARE SOMETIMES USED TO SUPPLY POWER TO THE STRUCTURE IN OFF GRID INSTALLATIONS,
SUCH AS SOLAR OR WIND DERIVED POWER SOURCES. THESE POWER SOURCES PRODUCE HIGH
PEAK VOLTAGES THAT WILL DAMAGE THE ALARM.
Wiring Instructions for AC Quick Connector Harness
CAUTION: Turn off the main power to the circuit before wiring the alarm.
•For alarms that are used as single station, DO NOT CONNECT THE RED WIRE TO ANYTHING. Leave the red wire
insulating cap in place to make certain that the red wire cannot contact any metal parts or the electrical box.
•When alarms are hardwire interconnected, all interconnected units must be powered from a single circuit.
•A maximum of 24 Kidde Safety devices may be interconnected in a multiple station arrangement. The intercon-
nect system should not exceed the NFPA interconnect limit of 12 smoke alarms and/or 18 alarms total (smoke,
CO, Smoke/ CO Combination, heat, etc.). With 18 alarms interconnected, it is still possible to interconnect up
to a total of 6 remote signaling devices and/or relay modules (see below for details on interconnecting Kidde
devices).

17
•Figure 9-C 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) available at all electrical supply
stores and most hardware stores.
NOTE: AC power should be turned off at this stage.
•For best results to minimize nuisance alarms, interconnected alarms should be on a dedicated line. If not on
a dedicated line, it is suggested that the smoke alarms share a lighting load circuit that does not have a dim-
mer associated with it. If receptacles must be placed on the same line it is suggested that they be placed
ahead of the smoke alarms (see Figure 9-D). This will prevent large voltage drops from occurring between
the first and last alarm in the circuit.
•After selecting the proper location for your alarm, and wiring the AC QUICK CONNECTOR harness as
described previously, attach the mounting bracket to the electrical box. To ensure aesthetic alignment of
the alarm with the hallway, or wall, the “A” line on the mounting bracket should be parallel with the hallway
when ceiling mounted, or horizontal when wall mounted.
Additional
Alarm
REDBLACK
WHITE
Additional
Alarm
REDBLACK
WHITE
FUSE OR CIRCUIT BREAKER
REDBLACK
WHITE
Kidde Relay Module
SM120X, CO120X
or both
Optional
Accessory
First
Alarm
Figure 9-C, Interconnect Wiring Diagram
Wires on alarm harness: Connected to:
Black: Hot side of AC line
White: Neutral side of AC line
Red: Interconnect lines (red wires) of other
units in the multiple station set-up
Figure 9 -D
Service
Panel
Receptacles Interconnected alarms
Wiring practice that has had good results
in preventing nuisance alarms

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•Pull the AC QUICK CONNECTOR through
the center hole in the mounting bracket
and secure the bracket, making sure that
the mounting screws are positioned in
the small ends of the keyholes before
tightening the screws.
•Plug the AC QUICK CONNECTOR into the
wiring harness attached to the unit, mak-
ing sure that the locks on the connector
snap into place. Then push the excess
wire back into the electrical box through
the hole in the center of the mounting
bracket.
•Install the alarm fully on the mounting
bracket by rotating the alarm in a clock-
wise direction.
NOTE: Installing the alarm on the
mounting bracket will automatically
activate the battery backup.
•Turn on the AC power. The green AC
Power On Indicator should be lit when
the alarm is operating from AC power.
NOTE: Attaching AC power first, without
rotating the alarm onto the mounting
bracket, will result in a false low battery trouble condition chirp (see Troubleshooting Guide). You
need to activate the battery to eliminate the false low battery trouble condition chirps. Attach unit to
mounting bracket very soon after applying AC power to avoid false low battery notification.
When mounting
in a hallway,
the "A" line should
be parallel with the
hallway. When wall
mounting, the "A"
line should be
horizontal.
A
Alignment Marks
(”A” Line) on
Mounting
Bracket
Mark and drill two 3/16" (5mm)
holes for wall anchors.
Remove
Install
Existing Kidde
AC Connector
(either connector
can be used for
this model)
AC Quick Connector
harness shipped
with product
AC connector
Figure 9-E

19
NOTE: The battery activation is a one-time feature that occurs when the alarm is rotated fully onto the
mounting bracket. that occurs when the alarm is rotated fully onto the mounting bracket. After activation,
the battery cannot be turned off, and can only be discharged at the end of unit life. If the alarm is removed
from the mounting plate, the backup battery will remain active. See Permanently Disable Alarm / Discharge
Battery section.
AC Wired Interconnect Model Capability
This model has AC hardwire interconnect capability. When one hardwired interconnect unit sounds an alarm,
all other compatible hardwire or interconnected units will also alarm.
The following models can be interconnected using the standard AC wiring interconnect: 1235, 1275, 1276, 1285,
i12020, i12020A, i12040, i12040A, i12060, i12060A, i12080, i12080A, i4618, i4618A, i4618AC, KN-SMFM-I,
RF-SM-ACDC, PE120, P12040, Pi2000, Pi2010, KN-COSM-I, KN-COSM-IB, KN-COSM-IBA, KN-COPE-I,
KN-COPE-IC, KN-COB-IC, KN-COP-IC, SL177i, SLED177i, HD135F, SM120X, CO120X, i12010S, i12010SCO,
P4010ACSCO, P4010ACSCO-W, P4010LACS-W, P4010ACS, P4010ACS-W, 3050-VAS10, 3050-VASC10,
2070-VASCR, 2070-VASR.
The alarm is now activated! After installation/activation, test your alarm as described in Operation and Testing
section.
WARNING: FAILURE TO PROPERLY INSTALL AND ACTIVATE THIS ALARM WILL PREVENT
PROPER OPERATION OF THIS ALARM AND WILL PREVENT ITS RESPONSE TO FIRE HAZARDS.

20
10. Operation And Testing
Operation
The alarm is operating once it is activated and
testing is complete (see “TESTING” below). When
products of combustion (smoke or CO) are sensed, the unit sounds a loud alarm with voice messages. See
Sections 1 and 2 for alarm signal descriptions. In high levels of CO, the unit will go into alarm in a shorter period
of time than at low levels of CO.
Testing
Test your alarm weekly by pressing and releasing the button quickly. A quick beep will confirm the button has
been pushed followed by the test sequence. See Other Alarm Visual and Audible Indicators table. The alarm and
voice (and any interconnected units) will sound if the electronic circuitry, horn, speaker, and battery are working.
If the alarm or voice does not sound, or gives erratic or low volume sound, the unit must be replaced. See Perma-
nently Disable Alarm / Discharge Battery section to determine how to prepare the unit for shipment or disposal.
WARNING: DUE TO THE LOUDNESS OF THE ALARM, ALWAYS STAND ABOUT 2.5 FEET AWAY
FROM THE UNIT OR USE EAR PROTECTION WHEN TESTING.
WARNING: DO NOT USE AN OPEN FLAME TO TEST YOUR ALARM, YOU COULD DAMAGE THE
ALARM OR IGNITE COMBUSTIBLE MATERIALS AND START A STRUCTURE FIRE.
Chirping
When End of Unit Life or Low Battery chirping begins, you can temporarily silence these chirps by pressing
the button.
WARNING: REPLACE UNIT AS SOON AS POSSIBLE WHEN IN END OF UNIT LIFE OR LOW BATTERY
MODE.
CO ALARM SENSOR RESPONSE TIMES
At 70 PPM, the unit must alarm within 60-240 minutes.
At 150 PPM, the unit must alarm within 10-50 minutes.
At 400 PPM, the unit must alarm within 4-15 minutes.