10 Best hardwired smoke and carbon monoxide detector in Canada

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Last Updated - 2025/07/25

Best Choice

01
Kidde

Kidde P3010CU Photoelectric Smoke & Carbon Monoxide Alarm with Voice Warning System

9.1 Easy installation

9.1 Simple to use

8.9 worth the money
Main highlights

Voice alarm – Announces the hazard type detected thereby helping to speed up the correct reaction. Alarm announces “Fire” when a smoke or fire hazard is detected and announces “Warning Carbon Monoxide” when a CO hazard is detected.
Self-activation – Alarm automatically activates when attached to the mounting bracket.
Sealed-in lithium battery – Sealed-in lithium power supply; No battery replacement required over the 10 year life of the alarm. Eliminates worry about battery removal or unauthorized deactivation of alarm.
Photoelectric sensor – Smoke alarm contains advanced photoelectric sensor that may detect visible particles (associated with smoldering fires) sooner than ionization alarms.
Combination smoke and carbon monoxide alarm – Smoke and CO sensing technologies work together to detect real fires faster and reduce nuisance alarms.
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9.6

Exceptional

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02
Kidde

Kidde P4010ACSCO AC Hardwired Combination (1) Carbon Monoxide & Photoelectric Smoke Alarm

11% Off
Main highlights

Voice messaging system
Smart hush control
Photoelectric sensing technology
Ambient light sensor
10 -Year sealed lithium battery backup
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9.5

Excellent

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03
First Alert

First Alert SC9120BA Hardwire Combination Carbon Monoxide and Smoke Alarm

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9.5 Easy installation

9.1 Simple to use

8.7 worth the money
Main highlights

Loud 85db Siren
Combination smoke and CO alarm eliminates the need for 2 electrical boxes
Battery backup ensures alarms work even during power outages
Alarm is wired directly into your electrical system and includes a battery backup and mute button
5-year limited warranty
120-Volt hard-wired detector. Electrochemical, Ionization sensor type
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9.4

Excellent

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04
First Alert

First Alert SC9120A Hardwire Smoke & Carbon Monoxide Alarm

14% Off Free Shipping

9.7 Battery Duration

9.3 Easy installation

9.1 Simple to use
Main highlights

Ionization smoke Sensor reliably detects particles from fast-flaming fires
Electrochemical Sensor accurately detects carbon monoxide
Each alarm can integrate with up to 18 compatible devices for extended coverage
120-Volt hardwired smoke and carbon monoxide alarms wire directly into your electrical system
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9.1

Excellent

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Value for Money

05
Kidde

Kidde Smoke Detector, Hardwired with Battery Backup & Interconnect, Battery Included

16% Off

9.7 Easy installation

9.7 Battery Duration

9.5 Simple to use
Main highlights

UL Certified, 10-year limited warranty
Smoke alarm still works during a power failure – unit operates on a 120V power source with 9V battery backup (battery included)
One button design allows you to test the smoke detector or temporarily silence a nuisance alarm with the Hush feature
Interconnectable with other hardwired alarms, providing whole-home alarm activation – when one detects smoke, they all sound, alerting everyone in the house
Easy installation – smoke detector includes a quick connect power harness
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8.9

Very Good

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06
First Alert

First Alert SC9120LBLA Hardwire Smoke/Carbon Monoxide Alarm 10 Year Battery

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9.9 worth the money

9.5 Easy installation
Main highlights

Ionization smoke Sensor reliably detects particles from fast-flaming fires
Electrochemical Sensor accurately detects carbon monoxide
Can integrate with up to 12 other First Alert or brk hardwired smoke detectors
120-Volt hardwired smoke and carbon monoxide alarms wire directly into your electrical system
10 year sealed battery included
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8.6

Very Good

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07
First Alert

FIRST ALERT Smoke and CO Alarm, SC7010BA, White

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9.1 Easy installation

9.1 Simple to use

8.4 worth the money
Main highlights

Keep your family safe with this talking hardwired smoke and carbon monoxide alarm
Features electrochemical Carbon Monoxide sensing technology and photoelectric smoke sensor optimized to detect larger smoke particles produced by smoldering fires; helps minimize the number of false alarm
Can connect to other compatible BRK or First Alert detectors, to ensure all alarms will sound when threat is detected
10 year limited warranty; Equipped with end of life signal chirp, so you know when it's time to replace the unit for your safety
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8.5

Good

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08
First Alert

First Alert BRK SC-9120B Hardwired Smoke and Carbon Monoxide Alarm with Battery Backup

10% Off

9.9 Easy installation

9.9 Simple to use

8.2 worth the money
Main highlights

Single test/silence button for simple operation
Side-load battery compartment for convenience
Note: customer should confirm the wiring polarity is correct and that all wire nut connections are secure
Lights indicate if the alarm is for smoke or for carbon monoxide
Hardwired CO smoke alarm features battery backup for constant monitoring
Can connect to other compatible BRK or First Alert CO smoke detectors
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8.4

Good

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09
First Alert

First Alert SCO5RVA Battery Operated Combination Carbon Monoxide and Smoke Alarm

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9.5 Easy installation

9.5 Sheerness

9.3 Simple to use
Main highlights

Photoelectric sensor detects smoke while minimizing false alarms
Electrochemical CO sensor alerts you to carbon monoxide danger. Age 3 - 8 years
Date on the alarm indicates when the alarm was manufactured.
Combination smoke detector/carbon monoxide alarm detects two threats
Battery-operated unit installs quickly and easily without an electrician
A single button tests the unit or silences the alarm. Where to install - kitchen, living room, basement, bathrooms, hallway, indoors
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8.3

Good

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10
GLBSUNION

Combination Smoke and Carbon Monoxide Detector Alarm, 2-Pack Beeps Warning Smoke and CO Alarms for Basements Travel Home Office House Bedroom Living Room Car, Battery Operated, Comply with UL 217/2034

Free Shipping

9.9 Precision

9.1 Easy installation

8.7 Simple to use
Main highlights

Simple to Use: Test/Silence button enables you to test the alarm weekly, and to easily silence the alarm when false alarms occur; malfunction and low battery warnings allow you to easily know the working status of the alarm; in case of an emergency, an alarm tone of over 85 dB will sound throughout your entire home, instantly alerting the entire household, even those in sleep, The unit is of malfunction if the unit sounds all the time, Reinstall the battery to repeat the operation Until normal.
Quick & Easy Installation with Guaranteed Quality: Product Dimensions: 4 * 4 * 1.5 inch, Requires no rewiring; easy to mount on any wall or ceiling with the included mounting bracket, screws and anchor plugs; certified to meet the UL safety standards for your peace of mind and absolute confidence in our product. you can get: 1. two detector alarms with Mounting bracket, 2. one manual, 3. four screws.
Keep your family safe with this battery operated smoke and carbon monoxide alarm; battery powered alarms provide continuous monitoring of CO and smoke levels, even if there's a power failure(Operated by 2 x 1.5V AA Batteries (not included)
Indicator lights on the face of the unit display the presence of smoke or carbon monoxide, while an 85dB siren provides a clear, loud warning upon detection. Note: Normal smoke gas is Smoldering fire smoke gas, Smoldering fire smoke gas is different from kitchen/cooking oil fumes. the smoke alarm is designed to detect and alarm for normal Smoldering fire smoke ags, not for kitchen/cooking oil fumes, kitchen/cooking oil fumes causes many false alarm, so the new safety standard UL217 requires smoke alarm depletes the fales alarm caused by kitchen/cooking oil and reduce the rate of false positive. please install the device in the right place under instructions.
2-in-1 Accurate, Reliable & Highly Sensitive Alarm: Equipped with both photoelectric smoke sensor and electrochemical CO sensor that work independently of each other; every second counts; detects both fast and slow-burning fires, and instantly notifies you when dangerous smoke or CO concentration is detected while minimizing false alarms; provides the ultimate protection from 2 deadly threats, all contained in 1 unit
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8.2

Good

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