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10 Best co2 detectors in Canada
Best Choice01SwitchBotSwitchBot Air Quality Monitor Indoor Meter Pro CO2 Detector, CO2 Monitor, Temperature Humidity Monitor with APP, Bluetooth Air Quality Tester for Car/Home/Office (Meter Pro CO2)
Main highlights- Portable and Durable: Our air quality detector measures 92mm x 79mm x 25mm and weighs just 154g. It has a built-in battery with up to 12 months of life and a low battery warnings. Features wall-mount holes and an adjustable bracket for versatile placement in any environment.
- Part of the SwitchBot Ecosystem: With a SwitchBot Hub, your Battery Circulator Fan or Evaporative Humidifier can automatically activate when CO2 levels exceed the set threshold, enhancing ventilation. This home air quality tester also supports third-party voice control through the Hub, simplifying air quality management.
- High Precision Sensor: Built with Swiss-made NDIR sensors, this CO2 monitor accurately monitors air quality by measuring CO2 levels every 1 second with an accuracy of ±50 ppm and a range of 400-9000 ppm. Its high sensitivity and stability ensure rapid and precise air quality feedback.
- 5-in-1 Multi-Functional Display Screen: SwitchBot Meter Pro CO2 features a 92-millimeter large screen that simultaneously displays CO2 levels, temperature, humidity, time, date, and comfort level. This indoor air quality monitor makes it easy to monitor your environment and decide when to ventilate for a healthier living space.
- 3 Alarm Methods: Customize CO2, temperature, and humidity range with trigger alerts. When limits are exceeded, you'll be notified via sound alarms, visual screen alerts, and app notifications (SwitchBot Hub required). With this air quality monitor, you can continuously and effectively track air quality.
9.7Exceptional
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- 02Kidde
Kidde C3010D Worry-Free Carbon Monoxide Alarm with Digital Display and 10 Year Sealed Battery
9.5Excellent
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- 03First Alert
First Alert CO615A Carbon Monoxide Plug-In Alarm with Battery Backup and Digital Display
9.4Excellent
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- 04First Alert
First Alert CO400A Battery Powered Carbon Monoxide Alarm
9.3Excellent
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Value for Money05KiddeKidde 900-0263CO-CA Plug-in Carbon Monoxide Alarm (KN-COB-DP2CA), White, 1 Units
12% Off9.2Excellent
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- 06VETOUCH
VETOUCH Plug-in CO2 Detector, 3-in-1 Carbon Dioxide Monitor with Temperature & Humidity, Manual Calibration, CO2 Alarm Function, Ideal for Home, Office, School, and Gym, Real-time Monitoring-1Pack
10% OffMain highlights- 【Winter Ventilation Helper】Essential for Canadian winters when windows stay closed. Know exactly when CO2 levels rise and fresh air is needed in bedrooms, offices, and kids' study areas.
- 【Real-Time Data Updates】Readings refresh every 2 seconds for immediate awareness of changing air conditions. Essential for monitoring stuffy rooms, poor ventilation, and indoor pollutants.
- 【Portable & Travel Ready】Lightweight 60g design with universal 110-240V voltage. Ideal for Canadian cottage trips, RV adventures, camping, and hotel stays across the country.
- 【Plug & Play CO2 Monitor】No wiring or setup required—simply plug into any outlet and start monitoring indoor air quality instantly. Perfect for Canadian homes, bedrooms, and living rooms.【️Important Note: This device detects Carbon Dioxide (CO2), NOT Carbon Monoxide (CO). It is an air quality monitor and is NOT a substitute for a smoke or carbon monoxide alarm.】
- 【Multi-Room Versatility】Perfect for basements, kitchens, living rooms, RVs, campers, classrooms, and daycare centers. Ensure healthy air quality wherever Canadians live, work, and travel.
- 【Large Color Display】1.83-inch screen shows real-time readings clearly from up to 15 feet away. Color-coded bars provide instant air quality assessment: green for fresh air, yellow for moderate, red for poor ventilation.
- 【Customizable CO2 Alarm】Set your own alert threshold and receive loud 85dB audible warnings when CO2 exceeds your preference. Perfect for knowing when to open windows in tightly sealed Canadian homes during winter.
- 【5-Year Sensor Life】High-precision NDIR sensor delivers ±5% accuracy and lasts up to 5 years. Reliable long-term performance for health-conscious Canadian families.
- 【3-in-1 Air Quality Tracker】Monitors CO2 levels, temperature, and humidity simultaneously. Ideal for nurseries, home offices, and classrooms across Canada where healthy air matters.
- 【180° Rotatable Screen】Flexible display rotates for easy viewing from any angle. Perfect for placing in any room, basement, or RV without compromising readability.
9.0Excellent
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- 07LSENLTY
LSENLTY CO2 Detector Plug in, 3 in 1 Air Quality Detector(Temp, Humidity and CO2 Value), High Accuracy Air Quality Monitor with Threshold Reminder and Manual Calibration for Home Office
Main highlights- Why do you need a carbon dioxide detector? If you frequently feel groggy, stuffy, or fatigued in a particular indoor environment—especially a bedroom or office—yet are certain that illness or lack of sleep is not the cause, an air monitor equipped with a CO₂ detection function can immediately pinpoint the problem: it is often simply an excessive level of CO₂ resulting from inadequate ventilation. Once you open a window or improve the airflow, that sense of grogginess will typically subside noticeably within 10 to 20 minutes.
- Upgraded Air Quality Detector – Plug & Play Design：This upgraded air quality detector features a more accurate sensor for improved sensitivity. Plug it into any standard US outlet (110V–220V) and use immediately—no standby time. Ideal for bedrooms, RVs, living rooms, basements, hotel rooms, offices, and more.
- Please Note: This product is a carbon dioxide air monitor; it is designed solely to detect carbon dioxide in the air and does not detect carbon monoxide, smoke, or combustible gases (such as methane or propane). It is classified as an air monitoring device, not as fire safety equipment.
- Manual Calibration：Easily calibrate by placing the unit in a ventilated area and holding the “Sun” button for 5 seconds. A 200-second calibration cycle runs, ending with “Calibration √” on the screen.
- High Accuracy & Fast Refresh：Equipped with advanced sensors, it delivers ±5% accuracy for CO2 (400–5000 ppm), ±2.7℉ for temperature (14–122℉), and ±5%RH for humidity (0–95%RH). Real-time readings update every 2 seconds.
- CO2 Threshold Reminder： When CO₂ exceeds 1500 ppm, recommend ventilation—perfect for bedrooms, wine cellars, basements, and other enclosed spaces.
- 3-in-1 Air Quality Monitor：The LSENLTY plug-in monitor measures CO2, temperature, and humidity. Includes adjustable threshold settings and manual calibration—reliable and easy to use for homes, greenhouses, offices, and RVs.
8.7Very Good
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- 08First Alert
First Alert CO710A 10-Year Carbon Monoxide Alarm with Temperature & Digital Display
8.5Good
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- 09Temtop
Temtop CO2 Monitor Indoor air Quality Monitor Portable CO2 Detector CO2, Temperature, Humidity Home, Office or School
Main highlights- 【What's Included】 Detector x 1, USB cable x 1, User manual x 1, Bracket or accessories set x 1
- 【No Disturb for a Worry-Free Life】the sound alarm can be turned off, and without backlight, no noise and light disturbances, allowing you to easily fall asleep at night
- 【Multiple alarm modes 】the color coding and optional alarm, will sound the warning when the CO2 concentration becomes excessive.
- 【Multifunctional CO2 monitor】Real-time CO2 detect, humidity and temperature monitor. CO2 detection range: 400-5000PPM. Temperature detection range: -10-60°C (14-140°F). Humidity detection range: 0-99%RH.
- 【Mini and Multi Application】Small and thin , easy to carry, also with a detachable stand and adsorptive back cover. You can check air quality anywhere and anytime.
- 【Cost-effectiveness and 70 days standby】the latest Photoacoustic CO2-Sensor incorporates intelligent algorithm , offering dual detection modes and using up to 70 days ! It provides you with the most cost-effective CO2 detector.
8.2Good
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- 10LSENLTY
LSENLTY Portable CO Detector Backup Battery, 3-in-1 CO Detector Plug in(CO, Temp & Humidity), Carbon Monoxide Detector with Visual & Audible(85dB) Reminder, Outdoor Air Quality Monitor for RV, Travel
Main highlights- 【Multi-scenario adaptation】 Portable CO tester breaks the limitations of usage scenarios. Whether for RV monitoring or outdoor camping environment assessment, this device is ready to use right out of the box, requiring no additional setup. It can be powered by either a plug or AAA batteries, with easy battery replacement ensuring long-term, worry-free use.
- 【High-Precision Sensor】 This battery-powered carbon monoxide monitor uses an upgraded high-precision sensor with a 2-second refresh rate for fast detection, keeping measurement errors strictly within ±5%. CO measurement range: 0-999ppm (±5%); temperature range: -10°C-50°C/14°F-122°F (±3%); humidity range: 0%-95%RH (±5%).
- 【Dual-Mode Power Supply】 This upgraded plug-in co detector features both a plug-in and AAA battery power supply, eliminating the need for frequent charging. In the event of a power outage, it automatically switches to battery emergency mode, providing 24/7 uninterrupted security monitoring.
- 【Accurate Reminder Function】LSENLTY Portable CO Monitor comes with an intelligent notification system. Once air quality values go beyond the preset threshold, the indicator light blinks and the buzzer triggers audio prompts at the same time. The 2.7-inch HD screen delivers real-time notifications, enabling you to grasp surrounding environmental status instantly.
- 【5-Year Stable Monitoring】CO alarm equipped with a high-stability sensor with a 5-year lifespan, the device maintains excellent monitoring performance over time for RV camping trips.
- 【3-in-1 All-Purpose Monitoring】This 3-in-1 CO Tester with Temp&Humidity combines three core detection functions: co values, temperature and humidity. No need to prepare multiple separate devices. One LSENLTY air quality Tester can fully track ambient air quality fluctuations even under complex surroundings.
8.1Good
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