Carrier KIDDE P4010ACS-WF User manual

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Kidde Smoke Alarm
User Guide
Photoelectric Smoke Alarm with Voice,
Hardwire Interconnect,
and Wi-Fi Compatibility
Model P4010ACS-WF
120V HARDWIRE
10-YEAR BATTERY BACKUP
(AC POWER REQUIRED)
HARDWIRE INTERCONNECT
Wi-Fi COMPATIBLE
VOICE ALARM
KIDDE Wi-Fi ALARM
P/N: 1382-7201-00 Rev A
Wi-Fi COMPATIBILITY:
This model requires a home Wi-Fi router
and internet to connect to a mobile device.
( Requires 802.11b/g/n (2.4GHz) Wi-Fi )
NOTE: Wi-Fi features do not function without AC power.

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Thank You for Purchasing this Wi-Fi Alarm
Hardwired for 120VAC, this model features a non-replaceable, sealed-in battery backup. It also contains a
voice message system and HushTM Control to temporarily silence nuisance alarms. It is capable of hardwire
interconnect, and is Wi-Fi compatible with mobile devices.
For best Wi-Fi enrollment results, follow these steps:
1. Scan QR code shown in STEP 1 on the front of the Quick Start Guide. Install the Kidde app.
2.
Open the Kidde app. Create and login to your account. Tap “Add a device.” Select “Smoke Alarm.” Follow in-app
steps.
3. Scan your unique QR code, shown in STEP 3 of the Quick Start Guide, or on back of your alarm. Setup and
connect alarm to the app. This will include the wiring and installation steps shown in sections 9, 10, and 11.
4. Complete setup by following in-app steps.
NOTE: Wi-Fi features do not function without AC power.
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 smoke from any source of combustion 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. Images in this user guide are representative only. Actual product may vary slightly.
The National Fire Protection Association (NFPA) and the manufacturer recommend replacing this alarm ten years from
the date code on back of alarm.
WARNING: Mobile alert services are ancillary to the product and for informational purposes only. They are not
intended or suitable for life safety or critical purposes nor do these services take the place of third-party life safety
monitoring services. This product’s smartphone and tablet notifications require a stable Wi-Fi connection, and are only
as reliable as your home Wi-Fi network.
Date Code (on back): ___________________
Date of Purchase: ___________________
Where Purchased: ___________________
Date to Replace: ___________________
Product Support: 1-877-542-5471
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 & Specifications . . . . . . . . . 8
6. Limitations Of Smoke Alarms . . . . . . . . . . . . . . . 9
7. Recommended Locations for Smoke Alarms. . . . . . . . . . . 10
8. Locations To Avoid . . . . . . . . . . . . . . . . . . 13
9. Wiring Instructions and Mounting Bracket Installation . . . . . . . 14
10 Kidde App Instructions . . . . . . . . . . . . . . . . . 18
11. Installation, Activation, and Wi-Fi Enrollment . . . . . . . . . . 19
11.1 Setting Up Wi-Fi Enrollment . . . . . . . . . . . . . . 19
11.2 Adding Another Device to an Existing Wi-Fi Alarm Network . . . . 20
11.3 Resetting a Device’s Wireless Settings . . . . . . . . . . . 21
11.4 Amazon Alexa and Google Home . . . . . . . . . . . . 21
12. Operation And Testing . . . . . . . . . . . . . . . . . 22
13. Recognizing Nuisance Alarms . . . . . . . . . . . . . . 23
14. Battery Back Up . . . . . . . . . . . . . . . . . . . 23
15. Permanently Disable Alarm / Discharge Battery . . . . . . . . . 24
16. Cleaning Your Alarm . . . . . . . . . . . . . . . . . 25
17. Good Safety Habits . . . . . . . . . . . . . . . . . . 26
18. Service And Warranty . . . . . . . . . . . . . . . . . 29

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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.
•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.
•Plan two ways out! Leave immediately by your escape plan. 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 neces-
sary, 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 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
NOTE: This is not a carbon monoxide (CO) alarm, but will receive and transmit a CO
alarm signal (with voice message) from an interconnected CO or combination smoke /
CO alarm.
The carbon monoxide (CO) alarm pattern is four quick beeps with voice “Warning! CarbonMonoxide”
repeating every 5 seconds. The red LED blinks in time with the alarm pattern.
WARNING: CARBON MONOXIDE ALARM ACTIVATION INDICATES THE PRESENCE OF CARBON
MONOXIDE (CO) AT HIGH CONCENTRATIONS WHICH CAN KILL YOU.
1) Operate the Test/Hush button. NOTE: Pressing the button on the initiating alarm unit (green LED
flashing every second) will silence the alarm notification, including all interconnected units. 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 applianc-
es, 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
(1) Requires additional devices and/or permissions in app to enable these features.
Operational Mode Visual Indications Audible Indications Action/Note:
Normal (standby) AC power: Green LED on continuously during
light conditions, or blink every 60 sec during dark
conditions.
DC power: Green LED blink approx every 60 sec.
Test (button press when no
alarm condition is present, or
alarm is not in out of box or
enrollment mode)
•4 patterns of Red/Amber/Green.
•Test: Red LED blinks in time with alarm
pattern.
• Green LED fade on/off at test complete
• Button press sound
•Voice: "Testing, this is very loud.
Press now to cancel test. 5, 4, 3, 2, 1."
• 3 long beeps, Voice "Fire!",
3 long beeps, Voice "Test Complete,"
Power on/reset sound.
•Voice "Test Canceled" if button
pushed before test sequence begins.
Perform button press once a week
to verify proper alarm operation
* Push/release button before the
countdown ends to cancel test.
Smoke Alarm Memory (unit
has experienced a smoke alarm
event within the last hour)
Red and Amber LED alternate on 1 sec,
every 10 sec.
After button push, voice "Smoke
previously detected" only on the
initiating alarm unit.
Push button to clear Alarm
Memory. NOTE: standard test
sequence will follow. (Push/release
button again to cancel test).
Smoke Alarm HushTM Mode 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
HushTM: Voice "Too Much Smoke,
Alarm 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.
Smoke Alarm HushTM Mode
Canceled
None Voice "Hush Mode Canceled." When smoke levels drop below the
alarm threshold, the voice message
will occur .
Initiating Alarm,
(Multiple alarms in an
interconnected system)
Green LED blinks once per sec indicating
that this is the unit initiating the alarm in an
interconnected, multiple alarm, system.
Unit in Smoke alarm mode. During alarm, the initiating alarm
red blink will be interrupted by a
green blink.
Weather & Intruder Alert(1)
Red LED flashes every sec. One long beep, 5 sec pause, Voice:
“Weather emergency in vicinity” OR
one long beep every other sec, voice
every 10 sec “Intruder detected.”
Take appropriate precautions.

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4. Troubleshooting Guide
If you are experiencing a problem with your alarm, or a fault, and are unsure of the next action, please contact product
support at 1-877-542-5471 before discharging the battery. You may also write us at: Kidde, 1016 Corporate Park Drive,
Mebane, NC 27302, or visit our internet address at www.kidde.com.
Trouble Condition Visual Indications Audible Indications Action:
False Low Battery
(AC power
connected before
backup battery
activated) Amber
LED
blinks
every
5
seconds
Chirp every 60 sec, with voice
"Activate Battery."
* Rotate unit fully onto mounting bracket to activate
battery.
Low Battery Chirp every 60 sec, voice every 30
sec: “Replace alarm.”
Voice stops after 5 mins.
* Remove, discharge, dispose unit, and replace as soon
as possible.
Fault Mode Chirp every 30 sec.
Voice every 30 sec: “Error, see
trouble shooting guide”
After 5 mins: no voice message
* See Cleaning Your Alarm section.
*
Push button once to attempt to reset the unit.
* Red LED will blink out an error code (number of
blinks) when button is pushed. Report the number of
blinks to customer service if needed.
* If error persists, or if customer service directs, remove,
discharge, dispose unit, and replace as soon as
possible.
End of Unit Life Amber LED blinks
twice every
5 seconds.
Double chirp every 30 sec. First 5
mins: Voice every 30 sec: “Replace
alarm, press button to temporarily
silence.” Voice stops after 5 mins. Voice
“Temporarily Silenced” after button
push (first 7 days only). After 7 days,
chirps continue, with voice “Replace
Alarm” every 30 sec for 5 mins.
* Push button once to silence for 24 hrs. (Push button
again to clear HushTM and perform a test.)
Note: 7 days after End of Unit Life begins, the
notifications cannot be silenced.
* Remove, discharge, dispose unit, and replace as soon
as possible.
Network Error Amber LED blinks
every 5 seconds.
Chime every 30 secs. Voice every 30
sec: “Connection lost, press button to
temporarily silence.” After 5 min: no
voice messages. Voice “Temporarily
Silenced” after button push.
* Push button to temporarily silence for 24 hrs. (Push
button again to clear HushTM and perform a test.)
* Call customer service.
* If error continues, remove, discharge, dispose unit,
and replace as soon as possible.
Loss of Wi-Fi
Connection
(NOTE: Wi-Fi
features do not
function without
AC power.)
None None *
The unit will attempt to re-connect on its own. After 10
consecutive mins of lost connection, you will receive a
notification of “Contact Lost” in your mobile App.
* Contact customer service. If error persists, or if
customer service directs, remove, discharge, dispose
unit, and replace as soon as possible.
Stuck Button None Chirp every 4 sec. * Push button to dislodge it from being stuck. If button
cannot be unstuck, remove alarm, 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 photoelectric technology. Ten (10) years after the unit was activat-
ed, 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.
Product Features and Specifications:
•Temperature: Operating Range: 40°F (4.4°C) to 100°F (37.8°C)
•Humidity: Operating range: up to 95% RH non-condensing
•Audible Alarm: 85+ dB at 10’ 3.0 to 3.5 KHz pulsing alarm, with voice message “Fire!”
•Smoke Sensor: Photoelectric
•Voice message system
•Smoke Alarm HUSHTM Control
•Ambient Light Sensing
•Powered by 120VAC (60 Hz, 53 mA max) wire-in connector with sealed lithium battery backup
•Hardwire Interconnect
•Wi-Fi Compatible to Mobile Device ( Requires 802.11b/g/n (2.4GHz) Wi-Fi ). NOTE: Wi-Fi features do not
function without AC power.
•One large, user-friendly button

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6. Limitations of Smoke 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.
•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. *
•Leading authorities recommend that both ionization and photoelectric smoke alarms be installed to help insure max-
imum detection of the various types of fires that can occur within the home. Ionization sensing alarms may detect
invisible fire particles (associated with fast flaming fires) sooner than photoelectric alarms. Photoelectric sensing
alarms may detect visible fire particles (associated with slow smoldering fires) sooner than ionization alarms.
•A battery powered alarm must have a battery of the specified type, in good condition and installed properly (this
model has a sealed backup 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 on a different floor.
•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 optimal detection, a smoke
alarm should be installed in each sleeping area on every level of a home.
•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
This alarm is not intended to alert hearing impaired individuals.
* Reference National Fire Protection Association (NFPA) standard 72

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7. Recommended Locations For Smoke 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.
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
Figure 7-A
ANYWHERE ALONG
THIS BOLD SURFACE
Locations permitted for smoke
alarms and smoke detectors
on tray-shaped ceilings.

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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.
ANYWHERE ALONG
THIS BOLD SURFACE
Locations permitted for smoke
alarms and smoke detectors
on tray-shaped ceilings.
Not within 6 feet of appliances
NFPA 72 states: “Smoke alarms in rooms with ceiling slopes greater than 1 ft in 8 ft (0.3m 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).
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 recommended
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 UNOC-
CUPIED, 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 or
be a photoelectric type.
•Do not install within 6 ft. of heating or cooking 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 (0.9m) of the door to a bathroom containing a tub or shower,
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 electronics 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
•Avoid installing where the unit will be exposed to direct sunlight.
Learn more about the Smart Smoke Alarm,
and check out other resources by scanning this QR code.

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9. Wiring Instructions and Mounting Bracket Installation
For best Wi-Fi enrollment results, follow these steps:
1. Scan QR code shown in STEP 1 on the front of the Quick Start Guide. Install the Kidde app.
2.
Open the Kidde app. Create and login to your account. Tap “Add a device.” Select “Smoke Alarm.” Follow in-app
steps.
3. Scan your unique QR code, shown in STEP 3 of the Quick Start Guide, or on back of your alarm. Setup and
connect alarm to the app. This will include the wiring and installation steps shown in sections 9, 10, and 11.
4. Complete setup by following in-app steps.
NOTE: Wi-Fi features do not function without AC power.
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 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.
•Kidde alarms are not designed, agency tested or certified for recessed mounting and should not be installed in
this manner. Recessed mounting impedes smoke entry into the smoke chamber, which may prevent the alarm
from sounding in a timely manner. This could endanger the lives of occupants in the residence. Kidde alarms are
designed, tested and certified for wall (if applicable) and ceiling surface mount only.
WARNING: THE ALARM CANNOT BE OPERATED FROM POWER DERIVED FROM A SQUARE WAVE,
MODIFIED SQUARE WAVE OR MODIFIED SINE WAVE, INVERTER. THESE TYPES OF INVERTERS ARE SOME-
TIMES 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 Connect Harness
CAUTION: Turn off the main power to the circuit before wiring the AC Quick Connect Harness.
•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.
NOTE: Single station alarms (including this Wi-Fi model, if used as a single station alarm) CANNOT send or receive smoke
alarm signals to other hardwire interconnect alarms in your home. If this model is used as a single station alarm, it will
send notifications ONLY to your mobile device (after the Wi-Fi alarm is registered with the Kidde app).
•When alarms are hardwire interconnected, all interconnected units must be powered from a single circuit.

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•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.
•The maximum wire run distance between the first and last unit in an interconnected system is 1000 feet.
•Figure 9-A 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.
•For best results to minimize nuisance alarms, interconnected alarms should be on a dedicated line. If not on a dedi-
cated line, it is suggested that the smoke alarms share a lighting load circuit that does not have a dimmer 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-C). This will prevent large voltage drops from occurring between the first and last alarm in the circuit.
Figure 9-A, Interconnect Wiring Diagram
Existing Kidde
AC Connector
(either connector
can be used for
this model)
AC connector
shipped with
product
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-C
Figure 9-B
Service
Panel
Receptacles Interconnected alarms
Wiring practice that has had good results
in preventing nuisance alarms
Additional
Alarm
WHITEWHITE BLACK
RED
Additional
Alarm
WHITE
BLACK
RED
FUSE OR CIRCUIT BREAKER
RED
BLACK
Kidde Relay Module
SM120X, CO120X
or both
Optional
Accessory
First
Alarm

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NOTE: AC power should be turned off at this stage.
•After selecting the proper location for your Alarm, and wiring
the AC QUICK CONNECT harness as described in the WIRING
INSTRUCTIONS, attach the mounting bracket to the electrical
box. To ensure aesthetic alignment of the alarm with the hall-
way, or wall, the “A” line on the mounting bracket should be
parallel with the hallway when ceiling mounted, or horizontal
when wall mounted (See Figure 9-D).
•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.
•Proceed to Section 10 for Kidde App Instructions.
If you are installing for Wi-Fi functionality, and have not yet
downloaded the Kidde App, do not connect your Wi-Fi unit
to the AC quick connect harness or mounting bracket yet. See
Section 10 for instructions on downloading the Kidde App. If you
are not using the Wi-Fi function, then proceed with the following
three steps.
•Plug the AC QUICK CONNECTOR into the wiring harness
attached to the unit, making 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 clockwise direction. NOTE: The alarm will
mount to the bracket in 4 positions (every 90 degrees). 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: Wi-Fi units will emit a series of LED blinks, tones, and voices as the unit(s) search for a Wi-Fi alarm
network. If you are intending to use Wi-Fi units without the Wi-Fi function, ignore these notifications, and
the Wi-Fi function will turn off in about 15 minutes, or you can push/hold the button until you hear two
beeps (about four seconds), to exit Wi-Fi enrollment mode. You can turn the Wi-Fi function on again at a later
date if desired. See Section 11.3 .
When mounting
in a hallway,
the "A" line should
be parallel with the
hallway. When wall
mounting, the "A"
line should be
horizontal.
Alignment Marks
(”A” Line) on
Mounting
Bracket
Mark and drill
two 3/16" (5mm)
holes for wall
anchors
A
Remove
Install
Existing Kidde
AC Connector
(either connector
can be used for
this model)
AC connector
shipped with
product
AC connector
Figure 9-D

17
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 elimi-
nate the low battery trouble condition chirps. Attach unit to mounting bracket very soon after applying AC
power to avoid false low battery notification.
NOTE: The battery activation is a one-time feature. 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.
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.
Interconnect Capability
This model has AC hardwire interconnect capability. When one hardwire interconnect unit sounds an alarm, all other
compatible hardwire interconnected units will also alarm. NOTE: AC wiring must be completed properly and the AC
quick connector must be attached to the unit for the hardwire interconnect function to work.
AC Hardwire Interconnect Model Compatibility
•The following models can be interconnected using the standard AC wiring interconnect: 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, P4010ACLEDS,
P4010ACLEDS-2, P4010ACLEDSCO, P4010ACLEDSCO-2, 3050-VAS10-A, 3050-VASC10-A,
P4010ACSCO-WF, P4010ACSCOAQ-WF, P4010ACS-WF, P4010ACSAQ-WF.
NOTE: Although this Wi-Fi model will hardwire interconnect with the models listed above, the Wi-Fi alarm will
ONLY transmit smoke and CO alarm signals from these alarms to your mobile device (after the Wi-Fi alarm is
registered with the Kidde app). Other status notifications from non Wi-Fi alarms, such as low battery, end of
unit life, or a fault condition, will NOT be transmitted to your mobile device through the Wi-Fi alarm.

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10. Kidde App Features and Instructions
For best Wi-Fi enrollment results, follow these steps:
1. Scan QR code shown in STEP 1 on the front of the Quick Start Guide. Install the Kidde app.
2. Open the Kidde app. Create and login to your account. Tap “Add a device.” Select “Smoke Alarm.” Follow in-app
steps.
3. Scan your unique QR code, shown in STEP 3 of the Quick Start Guide, or on back of your alarm. Setup and
connect alarm to the app. This will include the wiring and installation steps shown in sections 9, 10, and 11.
4. Complete setup by following in-app steps.
NOTE: Wi-Fi features do not function without AC power.
Your Kidde app is user friendly and allows helpful features such as:
•Get alarm notifications if smoke is detected in your home.
•Receive notifications when a device needs to be replaced.
•Simplify setup - Just scan the QR code on the back of the product. No additional hub is needed.
•Notify friends and family of potential danger.
•Test the alarm when you are home (on the same Wi-Fi network). *
•Smart HushTM false alarms when you are home (on the same Wi-Fi network). *
NOTE: The app receives real-time updates. The paper or online copy of your user guide will most likely lag behind the
app’s real-time updates. Visit Kidde.com to find and download or print the latest user guide.
* This feature only applies to Kidde Wi-Fi alarms/devices.

19
11. Installation, Activation, and Wi-Fi Enrollment
For best Wi-Fi enrollment results, follow these steps:
1. Scan QR code shown in STEP 1 on the front of the Quick Start Guide. Install the Kidde app.
2. Open the Kidde app. Create and login to your account. Tap “Add a device.” Select “Smoke Alarm.” Follow in-app
steps.
3. Scan your unique QR code, shown in STEP 3 of the Quick Start Guide, or on back of your alarm. Setup and con-
nect alarm to the app. This will include the wiring and installation steps shown in sections 9, 10, and 11.
4. Complete setup by following in-app steps.
NOTE: Wi-Fi features do not function without AC power.
WI-FI COMPATIBILITY:
This model requires a home Wi-Fi router and internet to connect to a mobile device.( Requires 802.11b/g/n (2.4GHz) Wi-Fi )
IMPORTANT: These alarms are hardwire interconnected, but do not communicate between alarms using
Wi-Fi. Wi-Fi functionality is only between alarms and a mobile device.
NOTE : At any time during Wi-Fi enrollment, if you have a problem, you can push and hold the button on any
problem unit until you hear three (3) beeps (approx 8 sec), and then release the button. The unit will reset the
unit’s wireless settings (described in Section 11.3). Once wireless settings are reset, the unit will prompt the
user to follow Quickstart instructions and start over.
11.1 Setting Up Wi-Fi Enrollment
A. Activate the backup battery, apply AC power, install alarm. NOTE: Wi-Fi features do
not function without AC power.
•Locate the red wheel on the back of the device. Turn the red wheel to the “ON” position
on the device using a standard screwdriver. (Figure 11.1-A)
•Once the battery is activated, the device will emit a power on sound and blink green
once every two minutes..
•Connect the AC Quick Connector Harness. When AC power is connected, the alarm will
announce “Ready to connect, follow quick start instructions”.
•When AC power is connected, the light rings will glow fading red.
•Install the alarm fully on the mounting bracket by rotating the alarm in a clockwise direction.
NOTE: The alarm will mount to the bracket in 4 positions (every 90 degrees).
NOTE: Installing the alarm on the mounting bracket will automatically activate the battery backup if it hasn’t
already been activated.
ON
PERMANENTLY
DISABLE and
DISCHARGE
alarm
Break
tab
SMOKE ALARM: 3 long beeps, repeating
CO ALARM: 4 quick beeps, repeating
STANDBY: Green LED blink every 60s
FAULT: Amber LED blink with chirp every 30s
LOW BATTERY: Amber LED blink every 5s, chirp every 60s
END OF UNIT LIFE: Amber LED blink every 5s, chirp twice every 30s
Push button to test weekly.
See user guide for more information
Figure 11.1-A

20
B. Open the Kidde App and follow instructions on the App to finish Wi-Fi enrollment.
NOTE: If no further steps are taken within 15 minutes of initial power up, a voice prompt, “Not Connect-
ed” will be heard once, and the Wi-Fi function will turn off. The unit will then perform as a standard
hardwired alarm. See Section 11.3 for reactivating Wi-Fi features.
C. After the Wi-Fi enrollment is completed, the alarm will announce “Success, now connected.”
D. Repeat steps A through C with each alarm to be enrolled with Wi-Fi.
11.2 Adding Another Device to an Existing Wi-Fi Alarm Network
For various reasons, you might want to add additional units to your existing Wi-Fi alarm network. Modifying your
existing Wi-Fi alarm network is easy and user-friendly.
A. Follow wiring instructions and install the mounting bracket to prepare for alarm installation (Section 9).
B. Activate the backup battery, apply AC power, install alarm. NOTE: Wi-Fi features do not function without AC
power.
•Locate the red wheel on the back of the device. Turn the red wheel to the
“ON” position on the device using a standard screwdriver. (Figure 11.2-B)
•Once the battery is activated, the device will emit a power on sound and
blink green
once every two minutes.
•Connect the AC Quick Connector Harness. When AC power is connected,
the alarm will announce “Readyto connect, follow quick start instructions.”
•Install the alarm fully on the mounting bracket by rotating the alarm in a clockwise direction.
NOTE: The alarm will mount to the bracket in 4 positions (every 90 degrees).
NOTE: Installing the alarm on the mounting bracket will automatically activate the battery backup if it
hasn’t already been activated.
C. Open the Kidde App and follow instructions on the App to finish Wi-Fi enrollment.
NOTE: If no further steps are taken within 15 minutes of initial power up, a voice prompt, ““Not Connected” will
be heard once, and the Wi-Fi function will turn off. The unit will then perform as a standard hardwired alarm. See
Section 11.3 for reactivating Wi-Fi features.
D. After the Wi-Fi enrollment is completed, the alarm will announce “Success, now connected.”
E. Repeat steps A through D with each alarm to be enrolled with Wi-Fi.
ON
PERMANENTLY
DISABLE and
DISCHARGE
alarm
Break
tab
SMOKE ALARM: 3 long beeps, repeating
CO ALARM: 4 quick beeps, repeating
STANDBY: Green LED blink every 60s
FAULT: Amber LED blink with chirp every 30s
LOW BATTERY: Amber LED blink every 5s, chirp every 60s
END OF UNIT LIFE: Amber LED blink every 5s, chirp twice every 30s
Push button to test weekly.
See user guide for more information
F ig ur e 11. 2- B