10 Best smoke and carbon monoxide detector in Canada

Advertising Disclosure

Last Updated - 2025/08/03

Best Choice

01
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
Show more
9.8

Exceptional

Show more
Curious about how we select the top products for you? Explore How It Works

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service levels, popularity trends, and more. The rankings reflect our opinion and should be a good starting point for shopping. By purchasing the products we rank, you’ll get the lowest price we found while we may receive a commission at no cost to you, which will help us continue to provide you with value.
Value for Money

02
X-Sense

X-Sense 10 Year Battery (Not Hardwired) Smoke and Carbon Monoxide Detector with Display, Dual Sensor Smoke CO Alarm Complies with UL 217 & UL 2034 Standards, SC01

11% Off Free Shipping

9.5 Easy installation

9.5 Battery Duration

9.3 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
Quick & Easy Installation with Guaranteed Quality: 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 217 & UL 2034 safety standards for your peace of mind and absolute confidence in our product
Practical LCD Display: Clearly indicates real-time carbon monoxide (CO) concentration in the surrounding air, as well as the remaining battery life and working status of the alarm; if a CO concentration of 30-999 ppm exists for a certain time period, the screen will be backlit blue, and the LED indicator will flash red 4 times every 5.8 seconds
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
10-Year Battery & 10-Year Sensor: This smoke and carbon monoxide alarm provides 10 years of continuous power with a built-in lithium battery, saving on energy while remaining eco-friendly; saves you from constantly having to change batteries; an end-of-life signal will let you know when it's time to replace the unit for safety
Show more
9.6

Exceptional

Show more
03
First Alert

First Alert SCO5RVA Battery Operated Combination Carbon Monoxide and Smoke Alarm

Free Shipping

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
Show more
9.5

Excellent

Show more
04
First Alert

First Alert Battery Operated Smoke and Carbon Monoxide Alarm, White, PRC700A-6

9.9 Sheerness

9.7 Simple to use

9.5 Easy installation
Main highlights

Provides 2-in-1 protection from two deadly threats
Photoelectric smoke sensing technology
Low profile design
Easy intstallation
Battery operated
Show more
9.4

Excellent

Show more
05
First Alert

FIRST ALERT Smoke and CO Alarm, SC7010BA, White

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
Show more
9.3

Excellent

Show more
06
First Alert

First Alert SC9120BA Hardwire Combination Carbon Monoxide and Smoke Alarm

Free Shipping

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
Show more
9.2

Excellent

Show more
07
GLBSUNION

Combination Smoke and Carbon Monoxide Detector Alarm, Beeps Warning Smoke Co Alarm Clock for Travel Home Bedroom Living Room Basement Attics, Battery Operated, Comply with UL 217 and UL 2034, 1 Pack

Free Shipping

9.3 Easy installation

8.9 Sheerness

8.7 Simple to use
Main highlights

Test this alarm First, HOW TO TEST IT(3 steps): 1. Install the batteries in clean air, then press the test button for five seconds to test the unit electronics, beeps will sound if it's normal; 2. Leave it in clean air for one minute; 3. put it into a sealed bag, spray some smoke or CO gas into the bag and seal it. Waiting for about one minute, the Alarm will go off if it's normal. NOTE: DO NOT test it by directly burning something under this alarm, which is an invalid test.
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. Features an electrochemical sensing technology and a photoelectric sensor that detects the larger particles of a smoldering fire. Please thoroughly read PRODUCT DESCRIPTION and the user manual before using.
Indicator lights on the face of the unit display the presence of smoke and carbon monoxide, while an 85dB beeps siren provides a clear, loud warning upon detection. If the unit sounds all the time or it is of malfunction, please reinstall the battery to repeat the operation OR Please put it into clear air until it's normal. If CO ALARM BEEPS：Only when detected clear air can it silence the CO alarm(if the room still exists high level of CO, the alarm will keep alarming until the air was cleaned)
Dimensions: 4 * 4 * 1.5 inch. Simple to use, NOTE: When installation please follow the circular arrow direction that Marked on the product for rotating the Mounting base/Bracket: PRESS DOWN AND TWIST; 【Do not install it in or near kitchens/garages/furnace room/bathrooms】. A single button tests the unit or silences the alarm. Low battery signal mute, quiets low battery signal for up to 8 hours. if there is any problems, please feel free to contact us, we are always here to help you.
2 * AA Battery-operated unit installs quickly and easily without an electrician, Can connect to other compatible detectors, To ensure all alarms will sound when threat is detected(Battery not included)
Show more
9.1

Excellent

Show more
08
Ledronco

Carbon Monoxide Detector,CO Alarm Detector with Digital Display and Sound Alarm for Home 2pcs

Free Shipping

9.5 Simple to use

9.3 Easy installation

8.9 worth the money
Main highlights

4：Power Supply: (DC3V) 2AA size batteries.(Not included) Sensor Type：Electrochemical Gas Detection Type：Carbon Monoxide Material: ABS
3： High Quality CO Alarm, UL2034 Certified Carbon Monoxide detector equipped with high accuracy and reliable long-life electrochemical CO sensor to detect CO gas leak quickly
2： Alarm Standard: the alert time depend the level of carbon monoxide concentration. 50ppm, alert within 60 to 90 minutes; 100ppm, alert within 10 to 40 minutes; 300ppm, alert within 3 minutes.
1：Light and Sound Alarm Warning: When a dangerous level of carbon monoxide is detected the red LED will flash and the alarm pattern will sound 85-decibel alarm to protect your family's life and property safety from CO detector.
Show more
8.9

Very Good

Show more
09
First Alert

First Alert SC9120A Hardwire Smoke & Carbon Monoxide Alarm

11% 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
Show more
8.6

Very Good

Show more
10
Gedsffati

5IN1 Plug in Smoke & Carbon Monoxide Detector& Combustible Natural Gas Alarm Combination Builti-in Backup Battery HD Screen [Smoke CO Gas Temp Humidity Sensor] for Home Indoor

Free Shipping
Main highlights

【Plug in & Play design】CA standard plug is compatible with 110V to 220V AC outlet. Fits all CA standard AC outlet in bedroom, kitchen, living-room, basement, hotel room, etc. Just Plug in and the detector will real-time work all day.
【Built-in 2000 mAh emergency Blackup battery】Provides 18-20h working time, helps to cope with sudden power outages. Rechargable lithium battery design, Compared to other disposable batteries, we can help you save a lot of battery replacement costs.
【All gas environment safety we care for you】Built-in CAN/ULC-S531,CAN/CSA-6.19,CAN/ULC-S588, standard independent Smoke / CO / Combustible gas sensor, HD screen visible and 85 dB audible design is real time detect the gas environment, bring you extra safety for you and family.
【5in1 CO & Smoke &Natural gas detectors】Our Gedsffati newest combination 5in1 detectors Integrated carbon monoxide, smoke, Combustible gas( like natural gas, propane, methane, natural gas, coal gas, gasoline, Hexane, butane, benzene, ethyene oxide, acetylene, LPG, LNG, etc),temperature and humidity sensors, real time to detector the environment gas safety for us.
【2.1’’ HD Screen】 All the datas real times and dynamically show on the HD screen, we can read the data faster from the big icons like: CO ppm, Smoke indicating bar, Combustible gas warning icon, humidity, temperature, CO indicator icon, plug and alarm status.
Show more
8.5

Good

Show more