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The best carbon dioxide detectors in comparison

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TopTes CT-300 Portable Carbon Monoxide Detector, CO Detector with Audible & Visual Alarm, 0-5000PPM, CO Alarm, Backlit LCD Screen, for Home, Car, Camping& Travel (Includes Battery x3) - Orange

TOPTES

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Carbon Monoxide Detector TopTes CT-300 is an ideal portable CO tester to help you detect CO gas concentrations timely and accurately, reducing the risk of CO poisoning and protecting your life. It is a must-have tool for homeowners, drivers, campers, DIY-ers, tourists, etc
Swift & Precise Measurement The CT-300, with an advanced electrochemical sensor head, swiftly detects CO levels from 0-5000 ppm. Its sensitivity ensures early warnings, allowing timely actions to prevent health risks. Accurate readings empower quick decisions, promoting safety and well-being. Versatile and portable, it guards against CO in various settings, ensuring peace of mind
Visual & Audible Alarm The travel CO detector uses both visual and audible alarms. When the concentration of CO reaches the alarm threshold, the screen changes color and emits an urgent alarm sound to alert you of the presence of CO gas in your surroundings, allowing you to promptly detect the danger, protect yourself
User-Friendly Functions With high-quality ABS and PC material and anti-slip edge texture, CT-300 is durable and portable; It can be used for 40 hours with new batteries; Low-power indicator will remind you of time to change batteries; It will automatically switch off when not in operation or when no gas is detected within 10 minutes to save power; Backlit screen for easy viewing, adaptable to dim environments
What You Get You will receive CT-300 Carbon Monoxide Detector, Protective Case, AAA Batteries, User Manual

SwitchBot CO2 detector with Built-in Hygrometer, Temperature Humidity Monitor with carbon dioxide monitor, Bluetooth CO2 Monitor, 2-Year Data Storage, SwitchBot Hub Required for WiFi Function

SwitchBot

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9,8

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Portable and Durable Our air quality detector measures 3.6" x 3.1" x 0.9" and weighs just 0.34 lb. 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.
High Precision Sensor Featuring NDIR Swiss industrial-grade sensors, this device accurately monitors air quality by measuring CO2 levels every 1 second with an accuracy of 50 ppm and a range of 400-9999 ppm. Its high sensitivity and stability ensure rapid and precise air quality feedback.
Multiple 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). Ensuring you can monitor air quality effectively at all times.
Part of SwitchBot Ecosystem With A SwitchBot Hub, exceeding CO2 levels can automatically activate your Battery Circuit Fan or Evaporative Humidifier for enhanced ventilation. Hubs also enable third-party voice control, simplifying air quality management.

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Newentor CO2 Monitor, Air Quality Monitor Indoor Carbon Dioxide Detector with Voice Alert Large Display, Temperature Humidity, Alarm Clocks for Home, RV, Office, Classroom, 400-5000ppm, Black

Newentor

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High-precision CO2 Sensor The CO2 detection adopts the most advanced sensor of Swiss Sensirion's unique PASens technology, and adopts the photoacoustic detection principle to perform accurate and reliable measurements in a wide range of concentration areas and applications.
Clock Calendar and Alarm Clock This indoor air quality meters can also be used as a daily clock and alarm clock, with multiple functions to make life more convenient.
Temperature and Humidity Monitor Temperature and humidity are closely related to human body, plants or storage environment. This air quality tester has the function of real-time monitoring of temperature and humidity.
Wide Range of Applications This CO2 sensor is widely used in agricultural planting, greenhouse vegetables, production warehouses, raw material processing, daily life, computer room, wine cellar, RVs, schools, cafes, etc.

Temtop CO2 Monitor Indoor Air Quality Monitor Portable Carbon Dioxide Detector CO2 Temperature Humidity Meter for Home Office School

Temtop

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9,7

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What's Included - CO2 Detector x 1, USB cable x 1, User manual x 1, Bracket or accessories set x 1. Tip - For real-time monitoring, we recommend keeping the device plugged in. This will enable real-time monitoring mode, providing you with the most accurate and timely air quality data.
Discreet Operation Mode - Equipped with a 'no disturb' mode that silences sound alarms and minimizes light emissions, these monitors are ideal for nighttime use, providing peace without sacrificing monitoring.
Compact and Multi-Use Design Designed for convenience and portability, each monitor comes with a detachable stand and an adsorptive back, perfect for checking air quality anywhere, anytime.
Customizable Alarm Modes - The monitors include multiple alarm modes with color-coded alerts and optional audio warnings for exceeded CO2 concentrations, enhancing safety and responsiveness.

Kidde 10LLDCO Ten Year Life Carbon Monoxide Alarm Digital Display with Sealed Longlife Battery

Kidde

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9,7

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Digital display that shows current CO levels (from 10 ppm)
10 year sealed battery
10 year manufacturer's warranty

£ 22.94

£ 24.00

£ 30.60

£ 33.27

£ 36.86

£ 37.95

£ 37.95

£ 38.36

INKBIRDPLUS Portable CO2 Detector, Air Quality Monitor with LCD Display, Rechargeable Battery, carbon dioxide Alarm for Home, Office, Travel Camping

INKBIRDPLUS

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Large LCD Screen The portable CO2 detector features a large color LCD screen for clear, easy-to-read displays. It automatically switches to ECO mode after 5 minutes of inactivity, saving energy without compromising performance
Dual Alarm Function The CO2 detector includes color-coded light indicators green (400 699ppm), yellow (700 1499ppm), and red (1500 5000ppm). When CO2 levels exceed 1500ppm, an alarm sounds to alert you. Customize the alarm threshold for added convenience
Portable and Durable Compact and lightweight, this CO2 detector is easy to carry and comes with a lanyard for hanging. Its built-in 1000mAh lithium battery charges fully in 3 hours and lasts up to 72 hours, making it ideal for on-the-go use
Wide Application Suitable for homes, offices, grow tents, greenhouses, and warehouses. NOTE Recommend that when first using, place the device in an open, unpopulated environment and manually calibrate it once to ensure accurate readings

Mini Carbon Monoxide Detector, Battery Powered CO monoxide Alarm with LCD Digital Display for Home and Car Safety, CO Monitor Conforms to EN 50291 Standad (1pcs)

Yezala

33% off

9,6

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Accurate Detection Our carbon monoxide alarm utilizes an advanced electrochemical sensitivity sensor, to accurately and quickly detect carbon monoxide gas leaks, effectively protecting you against potential hazards while minimizing false alarms.
Light and Sound Warning This CO alarm continuously monitors the air for carbon monoxide concentrations in real-time. When dangerous levels are detected, an 85dB alarm sounds and the red LED flashes to alert you, ensuring the safety of your family and property.
Easy Installation The CO detector is effortless to install - just twist off the backplate, screw it onto the desired location, insert 3x1.5V AAA batteries (not included), attach the detector to the backplate, and twist it into position. Low-power alerts notify you when the batteries need replacing, making battery replacement easy.
Clear Digital Display The digital LCD display screen shows a broad range of real-time carbon monoxide levels ranging from 000 to 999PPM. The blue backlight turns on automatically to display CO readings over 30 ppm and triggers an alarm at 50 ppm. Additionally, it displays different characters in various situations to help identify the source of any issues.
Satisfaction Guaranteed Each package includes one carbon monoxide detector, two expansion screws, two anchor plugs, a battery removal stick, and a user manual. If you encounter any product issues, please contact us anytime for professional service and support that ensures a pleasant experience.

5 in 1 CO2 Detector ABS Carbon Dioxide Monitor Indoor Air Quality Monitor with Battery Operated for Homes and Kitchen

LiebeWH

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Multifunction 5 in 1 meter can detect carbon dioxide concentration in air, and HCHO, TVOC, Temp, Humi, can meet your using requirement
1 Second Update The air quality monitor can update the system 1 second in real time, and can directly detect air quality without calibration, convenient and practical
Material Air quality meter adopt excellent ABS material, possess impact resistance, scratch resistance, environmentally friendly, offer you better using experience
Accurate Detection The high performance analysis chip is used to accurately catch the weak current generated in the electrochemical reaction process of CO2 Detector for more accurate detection

Carbon Monoxide Detector, 10-Year Sealed Battery CO Alarm with Digital LCD Display, Battery Powered Carbon Monoxide Alarm for Home, EN 50291 Standard

KARUOTOP

29% off

9,6

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Dependability & Precision Certified by UKCA and compliant with EN 50291 standard, this reliable CO alarm can precisely measure carbon monoxide levels in ambient air. In the event of a potential hazard, it immediately sounds a loud 85-decibel alarm to warn your family.
Flexible Installation This carbon monoxide alarm features a versatile free-standing design, making it easy to place on a tabletop or mount on a wall. Its portability also allows you to take it with you while traveling, ensuring your safety wherever you go.
Intuitive LED Indicators The CO alarm is equipped with 3 LED indicators that provide clear information about its working status a green LED flashes once every 60 seconds to indicate normal operation, a red LED indicates an alarm condition, and a yellow LED indicates a failure.

Brandson - CO2 Detector, Co2 Monitor Carbon Dioxide Detector Alarm, Co2 Sensor Digital USB, Indoor Air Quality Sensor Monitor with Temperature Humidity for Home Office Gym Car

Brandson

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TECHNICAL DATA Measuring ranges CO2 400 - 5000 PPM, deviations +- (50ppm + 5%); Temperature -9.9 C to + 50 C; Humidity 0% - 95%; +-6% DIMENSIONS 82 x 82 mm, depth 26 mm Screen size 8.5 cm 3.34 inches WEIGHT 108 g SCOPE OF DELIVERY Brandson carbon dioxide meter with rechargeable battery, USB to 3.5mm DC hollow plug cable and user manual.
WITH PRACTICAL ALARM FUNCTION You are warned when the CO2 content reaches a critical value (default 1000 PPM). The limit value can be set individually Classification of the display up to 600 PPM very good air quality 601 - 1000 PPM good to moderate 1001 - 1500 PPM moderate to poor over 1500 PPM very poor - urgently supply of fresh air!
POWER SUPPLY Hollow plug power connector for charging and mains operation integrated Li-Ion battery 500 mAh incl. USB to DC hollow plug cable for battery charging and power connection.
SCOPE OF FUNCTIONS CO2 meter with alarm function Limit values can be set individually Touch LCD display with 4 brightness levels 4-stage round display Alarm clock with snooze function Display of temperature (C and F), time (12 24 h) and humidity Display of battery level, feel-good symbols (smileys), ventilation recommendation, Co2 warning and CO2 alarm Buttons On OFF switch, + - rocker switch, Settings button

This ranking is created through algorithmic analysis of millions of products tailored specifically to your search. We aim to find the most suitable product for you based on manufacturer information and price. The ranking reflects our opinion and should serve as a good starting point for your purchase. We would like to point out that we have not tested the products ourselves and link to selected online shops and partners from which we may receive compensation.

You might also be interested in these carbon dioxide detectors.

Carbon Monoxide Detector with LCD Digital Display, CE Certified CO Alarm with Sealed in 10 Year Battery, Standalone Audible CO Detector for Home,Black,1 Pack

Accurate Relialbel CO Detector Comply with EN 50291 standard, CE Certified Carbon Monoxide alarm, equipped with high accuracy and reliable electrochemical sensor, continuously measure CO concentration in ambient air.

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LSENLTY Portable CO2 Detector, 2s Refresh High Accuracy Carbon Dioxide Monitor, 3 in 1 CO2 Meter(Temperature, Humidity and CO2 Value), 96 Hours Standby Time CO2 Monitor for Travel Camping Home Office

Portable Carbon Dioxide Detector The product has a compact size (size 7.6x7x3 cm) and is equipped with a strap design, suitable for hanging on the wall, car, or backpack. Suitable to use for camping, hanging on the wall in the living room or bedroom at home, or placed on the desktop in the office.

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X-Sense Carbon Monoxide Alarm Detector 10-Year Life, Replaceable Battery Operated CO Alarm Detector with Digital Display, Conforms to EN 50291 Standard, CO03D

ACCURATE & RESPONSIVE Featuring an advanced Figaro electrochemical CO sensor and a high-performance ST chipset, the X-SENSE Carbon Monoxide Alarm instantly and accurately detects concentration levels of CO, an invisible, deadly gas, while minimizing false alarms; designed to give you the earliest possible warning of CO threat with both a loud 85 dB alarm and a rapid flashing red LED indicator (the LED indicators won t disturb your sleep while the alarm is in normal working status)

~~£ 30.99~~ free shipping

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Carbon Monoxide Detector CO Alarm with 10 Year Sealed Battery LCD Digital Display and Sound Warning for Home Office safety EN50291

Display Screen and Indicators this carbon monoxide alarms for home provides real-time carbon monoxide levels, which is a great advantage for immediate response.

~~£ 25.99~~

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Carbon Monoxide Detector, 10 Years Battery Carbon Monoxide Alarm, CO Alarm with LCD Display and Test/Silence Button Conforms to EN50291 Standard

Easy to Use It can be easy wall mounted or free standing; you can take it during travel to protect you especially when there has fireplace or smoke

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FireAngel Carbon Monoxide Alarm and Detector - FA6813 10-Year Sensor Life CO Alarm for Home with AA Batteries - Travel, Portable Carbon Monoxide Detector - CO Detector Monitor with Test Button

FIREANGEL HOME PROTECTION In addition to our carbon monoxide detectors, we offer a wide range of other safety products designed to protect you and your family. Choose from smart and wireless devices, as well as standard fire, smoke, and heat alarms.

~~£ 17.99~~

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PT199 Natural Gas Leak Detector with Audible & Visual Alarm, Portable Gas Sniffer to Locate Combustible Sources Like Methane, Propane for Home (Includes Battery x2)-Orange

Batteries Included and Easy to Use The TopTes PT199 comes with 2x AAA Alkaline Batteries, so you will be able to set the detector up and have it ready as soon as you receive it. The system warm-up time is about 30 seconds. The low battery indicator will engage when battery voltage is below 2.4V. Automatic power off after 5 minutes without operation or gas detection

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Google Nest Protect - Smoke Alarm And Carbon Monoxide Detector (Battery)

It tells you what the danger is and where it is. The Split-Spectrum Sensor looks for both fast-and slow-burning fires. It also has a 10 year CO sensor so that it can tell you where poisonous, invisible CO is hiding.

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Metriful CO2 Monitor with Alarm, Carbon Dioxide Air Quality Detector for Home and Work, Mute and Dim Functions, Adjustable Thresholds, Rechargeable Battery, NDIR Sensor

Detect bad air quality before discomfort occurs

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3 Packs Carbon Monoxide Detector - AGSMXSYG Carbon Monoxide Alarms Battery Powered with Digital Display, CO Detectors Alarms Monitor for Home,RV & Kitchen

Wide Range of Applications Carbon monoxide detector is suitable for home, RV, kitchen, bathroom, etc.

~~£ 49.99~~ free shipping

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CPVAN Carbon Monoxide Detector Alarm, 3-in-1 CO Detctor 10 Year Sensor Life Replaceable Battery with Digital Display Portable Carbon Monoxide Alarm for Home EN 50291 Standard (CO, Temp and Humidity)

10 Years Sensor Life This carbon monoxide monitor is built electrochemical sensor to deliver high consistency and reliability for double detection and protection. Equipped with replaceable batteries, you can just replace it when the power is low for easy handling. Test your carbon monoxide alarm regularly to ensure it is operational.

~~£ 26.99~~ free shipping

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Air Quality Monitor Indoor, 5 in 1 CO2 Monitor CO2 Detector Portable Air Quality Meter Carbon Dioxide Monitor with LCD Display, for Home Kitchen Office Car

Multi-Functional 5-in-1 Design This versatile air quality monitor can detect carbon dioxide concentration in the air, as well as HCHO, TVOC, temperature, and humidity. Get comprehensive insights into the air quality of your surroundings with this monitor. Stay informed about multiple factors affecting the air you breathe with this multifunctional device

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The best carbon dioxide detectors in comparison

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