First Alert Onelink 1042136 User manual

User’s Manual Model: 1042136
Important! Please read carefully and save this document.
This user’s manual contains important information about your combination Smoke and CO Alarm’s operation.
If you are installing this alarm for use by others, you must leave this manual (or a copy of it) with the end user.
Installed On
Replace by

2
Table of Contents
Welcome 3
Parts of this Alarm 4
Understanding Your Alarm 5
Where to Install 6 - 7
Where Not to Install 8
Setup and Installation 9
Wireless Interconnect 10
When the Alarm Sounds 10 - 11
Using the Silence Feature 11 - 12
Weekly Testing 12
Regular Maintenance 13 - 14
Alarm End of Life 14
Ionization and Photoelectric Technology 14 - 15
Fire Safety Tips 15 - 16
What You Need to Know About CO 16 - 17
Potential Sources of CO in the Home 17 - 18
Regulatory Information 18 - 21
Special Compliance 21 - 23
General Limitations 23 - 24
Troubleshooting Guide 25
Limited Warranty 26
Copyright and Technical Specifications 27

3
Welcome
Thank you for choosing Onelink by First Alert for your safety needs. In addition to
the alarm sounds, you can receive notifications in case of an emergency to help
provide a warning of a fire or carbon monoxide leak while you are home or away.
Please take time to read this manual and make this alarm an integral part of your
family’s safety plan. Visit www.onelink.firstalert.com for additional information.
Contents
Smoke and
CO Alarm
Mounting
Bracket
Mounting
Hardware
User’s
Manual
System Requirements
Wireless Network Android or iOS Device Onelink App
Required to use a 2.4 GHz wireless
connection and a compatible
802.11 b/g/n/ac router.
HomeKit™requires an iPhone®, iPad®,
or iPod touch®with iOS 10 or later,
or Android®5 or later.
Search and download the
Onelink Home app from the
App Store or Google Play.

4
Parts of this Alarm
1. Test/Silence Button
2. Color Indicator Ring
3. Speaker
4. Battery Drawer
1
2
5. Mounting Bracket
6. Mounting Slots
7. Turn Alarm Clockwise
to Attach
8. Turn Alarm
Counterclockwise
to Remove
5
8
7
6
3
4

5
Understanding Your Alarm
LED Color
Patterns Smoke / CO Events Voice Guide
Power Up and Welcome
Power Up
“First Alert welcomes you to your Onelink Smoke
and Carbon Monoxide Alarm. The Onelink App will
guide you through the simple setup process.”
Programming, Silencing & Pairing “[Location, example: “Hallway”] Location Programmed.”
Testing “The testing is complete. The test is done and you are protected.”
Emergency [voice complete]
Pairing Alarm will flash blue during pairing.
Testing
“Testing Smoke” [beep beep beep!]
“Testing Carbon Monoxide” [beep beep beep beep!]
“Evacuate, Evacuate, there’s Fire in the [Location]!”
“Testing Alarms... The alarm will sound and for your
protection is very loud. This may take a few seconds.”
“Highest carbon monoxide level was 0 PPM.”
Emergency
“Evacuate! Evacuate! There is Smoke [or Carbon
Monoxide] in the [Location!]!”
“Highest carbon monoxide level was [Number] PPM.”
Malfunction
“Detector error.”
“Alarm has reached its End of Life. Replace Alarm in [Location].”
Low Battery Information available via mobile app.

6
Where to Install
Minimum coverage for Smoke Alarms, as recommended by the National Fire Protection Association
(NFPA), is one Smoke Alarm on every floor, in every sleeping area, and in every bedroom (See
“Regulatory Information For Smoke Alarms” for details on the NFPA recommendations). For CO Alarms,
the National Fire Protection Association (NFPA) recommends that a CO Alarm should be centrally
located outside of each separate sleeping area in the immediate vicinity of the bedrooms. For added
protection, install additional CO Alarms in each separate bedroom, and on every level of your home.
NOTE: For added protection, install an additional Smoke/CO Alarm at least 15 feet (4.6 meters)
away from the furnace or fuel burning heat source where possible. In smaller homes or in
manufactured homes where this distance cannot be maintained, install the Alarm as far away as
possible from the furnace or other fuel burning source. Installing the Alarm closer than 15 feet
(4.6 meters) will not harm the Alarm, but may increase the frequency of unwanted alarms.
In general, install combination Smoke and Carbon Monoxide Alarms:
• On every level of your home, including finished attics and basements.
• Inside every bedroom, especially if people sleep with the door partly or completely closed.
• In the hall near every sleeping area. If your home has multiple sleeping areas, install a unit
in each. If a hall is more than 40 feet (12 meters) long, install a unit at each end.
• At the top of first-to-second floor stairs.
• At the bottom of the basement stairs.
• For additional coverage, install Alarms in all rooms, halls, and storage areas, where
temperatures normally remain between 40˚ F and 100˚ F (4.4˚ C and 37.8˚ C).
Recommended Placement
• When installing on the wall, the top edge of Smoke Alarms should be placed between 4 inches
(102 mm) and 6 inches (153 mm) from the wall/ceiling line.
• When installing on the ceiling, place the alarm as close to the center as possible.
• In either case, install at least 4 inches (102 mm) from where the wall and ceiling meet.
• Avoid “Dead Air” spaces.
NOTE: For any location, make sure no door or other obstruction could keep carbon monoxide or smoke
from reaching the Alarm.
Installing Smoke/CO Alarms in Mobile Homes
For minimum security install one Smoke/CO Alarm as close to each sleeping area as possible.
For more security, put one unit in each room. Many older mobile homes (especially those built
before 1978) have little or no insulation. If your mobile home is not well insulated, or if you are
unsure of the amount of insulation, it is important to install units on inside walls only.

7
Where to Install (Continued)
SPEAKER OPENING
IN UPPER LEFT
CORNER
PLACE HERE
OR HERE
DO NOT PLACE
IN THIS AREA
4”
(102 mm)
minimum
between 4”- 6”
(102 mm - 153 mm)
from ceiling
CEILING
WALL

8
Where Not to Install
Do NOT locate this Smoke/CO Alarm:
• In garages, furnace rooms, crawl spaces and unfinished attics. Avoid extremely dusty, dirty or greasy areas.
• Where combustion particles are produced. Combustion particles form when something burns. Areas
to avoid include poorly ventilated kitchens, garages, and furnace rooms. Keep units at least 20 feet (6
meters) from the sources of combustion particles (stove, furnace, water heater, space heater) if possible.
In areas where a 20 foot (6 meter) distance is not possible – in modular, mobile, or smaller homes, for
example – it is recommended the Smoke Alarm be placed as far from these fuel-burning sources as
possible. The placement recommendations are intended to keep these Alarms at a reasonable distance
from a fuel-burning source, and thus reduce “unwanted” alarms. Unwanted alarms can occur if a Smoke
Alarm is placed directly next to a fuel-burning source. Ventilate these areas as much as possible.
• Within 5 feet (1.5 meters) of any cooking appliance. In air streams near kitchens. Air currents
can draw cooking smoke into the smoke sensor and cause unwanted alarms.
• In extremely humid areas. This Alarm should be at least 10 feet (3 meters) from a shower, sauna,
humidifier, vaporizer, dishwasher, laundry room, utility room, or other source of high humidity.
• In direct sunlight.
• In turbulent air, near ceiling fans or open windows. Blowing air may prevent CO/smoke from reaching
the sensors.
• In areas where temperature is colder than 40˚ F (4.4˚C) or hotter than 100˚ F (37.8˚C). These areas include
non air conditioned crawl spaces, unfinished attics, uninsulated or poorly insulated ceilings, porches,
and garages.
• In insect infested areas. Insects can clog the openings to sensing chamber.
• Less than 12 inches (305 mm) away from fluorescent lights. Electrical “noise” can interfere with the sensor.
• In “dead air” spaces. See below for additional information.
• “Dead air” spaces may prevent smoke from reaching the Smoke/CO Alarm. To avoid dead air spaces, follow
installation recommendations below.
• On ceilings, install Smoke/CO Alarms as close to the center of the ceiling as possible. If this is not possible,
install the Smoke/CO Alarm at least 4 inches (102 mm) from the wall or corner.
• For wall mounting (if allowed by building codes), the top edge of Smoke/CO Alarms should be placed
between 4 inches (102 mm) and 12 inches (305 mm) from the wall/ceiling line, below typical“dead air”spaces.
• On a peaked, gabled, or cathedral ceiling, install first Smoke/CO Alarm within 3 feet (0.9 meters) of the
peak of the ceiling, measured horizontally. Additional Smoke/CO Alarms maybe required depending on
the length, angle, etc. of the ceiling’s slope. Refer to NFPA 72 for details on requirements for sloped
or peaked ceilings.

9
Setup & Installation
Do not install this unit over an electrical junction box. Air currents around junction boxes
can prevent smoke from reaching the sensing chamber and prevent the unit from alarming.
Only AC powered units are intended for installation over junction boxes.
NOTE: Be sure to mount the product in the orientation specified in the next steps as this provides the most
stability for mounting the product to the wall or ceiling. When wall mounting, it is suggested that the horn
opening is in the upper left corner. This alarm is designed to be mounted on the ceiling or wall if necessary.
Ensure the iOS software is updated to iOS 10 or later or Android 5 or later.
Step 1 Download the free Onelink app from the App Store
or Google Play and follow setup instructions.
Speaker
Opening
Step 2 Hold the mounting bracket against the ceiling (or
wall) so the two universal mounting holes are aligned
approximately at the 9 and 3 o’clock positions.
(See image). Trace around the holes with a pencil.
Step 3 Put the unit where it won’t get covered with
dust when you drill the mounting holes.
Step 4 Using a 3/16” (5 mm) drill bit, drill a hole through
the center of the outlines you traced.
Step 5 Insert the plastic screw anchors (in the plastic
bag with screws) into the holes. Tap the screw
anchors gently with a hammer, if necessary,
until they are flush with the ceiling or wall.
Step 6 Install the screws but do not tighten completely. Attach the mounting bracket by aligning
the screws in the open portion of the universal mounting slots and rotating the bracket into
place. Tighten the screws until they are snug to secure the bracket. Do not over tighten.
Step 7 Mount alarm to mounting bracket to activate the alarm.
NOTE: After you activate the Alarm, the Color Indicator Ring will power up and the Alarm will
welcome you. To program your alarm, follow the instructions provided in the Onelink app.
!
WARNING: iOS and Android device notifications require a functional Wireless connection. For
best results, recommended to use with a 802.11 b/g/n router. The notifications are only as reliable as
your Wireless network and are not a substitute for a third party emergency monitoring service.

10
Wireless Interconnect
Benefits of Wireless Interconnect
The wireless interconnect feature on this alarm allows you to connect each of your
First Alert Onelink alarms so when one alarm sounds, they all will sound.
!
WARNING: Install alarms and test to assure range and
reliability of interconnection throughout the house.
• First Alert Onelink alarms can typically communicate with each other if they’re 50ft (15m) apart inside a
home. Keep in mind that some features of a home may reduce the interconnect range and reliability of
interconnection, including the number of floors, number/size of rooms, furniture, type of building material,
suspended ceilings, ductwork, large metallic appliances and metal studs. This kind of interference may be
fixed by adding more Onelink alarms that can route wireless signals around any various obstructions.
• Make sure you test your Onelink alarms for proper interconnection via the weekly testing.
Wireless Frequency: This alarm supports wireless frequency of 2.4Ghz b/g/n. For best results, recommended to use
with a 802.11 b/g/n router.
Adding Additional Alarms: Simply follow the instructions on your Onelink app to add additional alarms to your account.
Identification of Events: If your alarm sounds, it is important to first identify the type of alarm.
When the Alarm Sounds
What To Do If The Smoke Alarm Sounds
• If the unit alarms and you are not testing the unit, it is warning you of a potentially dangerous situation that
requires your immediate attention. NEVER ignore any alarm. Ignoring the alarm may result in injury or death.
• If the unit alarms get everyone out of the house immediately.
What To Do In Case of a Fire
• Don’t panic; stay clam. Follow your family escape plan.
• Get out of the house as quickly as possible. Don’t stop to get dressed or collect anything.
• Feel doors with the back of your hand before opening them. If a door is cool, open it slowly. Don’t
open a hot door. Keep doors and windows closed, unless you must escape through them.
• Cover your nose and mouth with a cloth (preferably damp. Take short, shallow breaths.)
• Meet at your planned meeting place outside your home, and do a head count to make sure everybody got
out safely. Call the Fire Department as soon as possible from outside. Give your address, then your name.
• Never go back inside a burning building for any reason.
• Contact your Fire Department for ideas on making your home safer.