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The best carbon dioxide detectors in comparison

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FireAngel Digital Carbon Monoxide Detector with 10-Year Sealed for Life Battery - FA3322 Humidity, Temperature and CO Alarm - Portable Carbon Monoxide Alarms for Home and Travel - CO Detector Monitor

Fireangel

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TEMPERATURE AND HUMIDITY ALERTS The FireAngel carbon monoxide alarm also provides temperature and humidity readings. Warnings will sound if either reach extreme highs or lows, making the device perfect for bedrooms and living spaces.
LIFETIME BATTERY Each digital CO monitor contains a 10-year battery sealed within, offering protection for the lifetime of the device without ever needing to change the batteries.
PORTABLE CARBON MONOXIDE DETECTOR Each device comes with an integrated mounting bracket and screws for an easy-to-fit setup. Measuring 120 x 76 x 31 mm, it s compact enough to travel with, providing on the go holiday protection.
SAFETY ASSURED The FA3322 carbon monoxide monitor has been rigorously tested and is certified to Kitemark standard KM551504. Suitable for domestic premises only.
FIREANGEL HOME PROTECTION In addition to our CO detectors for home use, 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.

£ 28.59

£ 19.99

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.

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

KARUOTOP

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Dependability & Precision Equipped with a state-of-the-art electrochemical carbon monoxide sensor, it precisely measures carbon monoxide levels. In the case of a potential hazard, the detector will sound a loud 85-decibel alarm as an immediate warning.
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.

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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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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.

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

WISUALARM

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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
Quality Certificated This CO alarm has been rigorously tested and certificated by German laboratory to meet European EN 50291 standard
Display Screen and Indicators Its large LCD screen displays real-time CO readings and the 3-color LED status light flashes green, amber, or red to indicate power, fault, or alarm
Effective Notification The alarm has a build in high volumn buzzer output over 85dB at 3 meters, and low battery warning in the early 30 days to ensure an effective alarm

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

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

AGSMXSYG

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Wide Range of Applications Carbon monoxide detector is suitable for home, RV, kitchen, bathroom, etc.
Alarm Concentration Levels 30PPM to 50PPM - Alarm in 60 to 90 minutes; 100PPM - Alarm in 10 to 40 minutes; 200PPM - Alarm in 1 minute.
Intelligent Recognition Detection When the dangerous level is reached, the red LED light will flash, displaying PPM and emitting an 85dB alarm sound.

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

LSENLTY

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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.
High Accuracy & Fast Refresh Time With a high-quality smart sensor, CO2 accuracy is 50PPM (CO2 detection range 400-5000PPM) and temperature is up to 1.8 (temperature detection range 14-122 ). correct. Humidity is 5%RH (humidity detection range 0 to 95%RH). Always see the latest changes in CO2 concentration, temperature, and humidity with an update rate of up to 2 seconds.
CO2 Alarm Function When it exceeds 1500ppm, the alarm will sound automatically, and you can also set different alarm ranges according to your needs. You will receive an alert as soon as CO2 exceeds a preset range. Understand the condition of bedrooms, baby rooms, wine cellars, basements, plant nurseries, and other areas.
CO2 Concentration Stage This CO2 detector is designed with 3 stages of CO2 concentration normal stage (400-700 ppm), warning stage (700-1500 ppm), and danger stage (1500-5000 ppm). LSENLTY CO2 detector provides you with a healthier life.
Large capacity rechargeable battery Built-in 1000mAh lithium battery, can be fully charged within 3 hours and can be used for about 96 hours. If there is no operation for 5 minutes, it will automatically go into energy-saving mode but don't worry, the carbon dioxide detection function will continue. Suitable for travel, car, home, office, etc.

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

Kidde

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

£ 21.83

£ 24.00

£ 30.60

£ 37.95

Carbon Monoxide Detector,Carbon Monoxide Alarm, CO Detector With LED display (AA Battery NOT Included) UK Patent No.: 6332482

EiBEST

55% off

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How to Use Carbon Monoxide Alarm Powered by AA batteries, it will automatically turn on after loading the battery and then enter working mode (the screen will immediately turn off, which is a normal phenomenon). When the concentration value is greater than 30ppm, the screen will light up and display the value for you to check the PPM value at any time
Carbon Monoxide Detector is equipped with an LCD display for easy real-time reading of values (ppm) and audible and visual alarms. When the concentration exceeds a certain level, the alarm sound and red light will flash. You can quickly and clearly understand the PPM concentration and take appropriate measures to effectively protect your personal and property safety.
Alarm self-test To test the effectiveness of the product, you can perform a self check by briefly pressing the button once. If the value is not displayed on the screen and an orange light is shown, it indicates that the battery is fully charged and reminds you to replace the battery in a timely manner
Carbon Monoxide Alarm Widely Used Adopting high-precision electrochemical sensor, it can quickly detect carbon monoxide gas. Can be used in kitchen, bedroom, bathroom, garage, RV, camping and other places. It has passed EN50291 safety certification, reliable quality.
Note the battery can standby for 10 months, the sound and light alarm will lead to rapid loss of power

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.

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

Multifunction 5 in 1 meter can detect carbon dioxide concentration in air, and HCHO, TVOC, Temp, Humi, can meet your using requirement

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Scondaor Carbon Monoxide Alarm Detector EN 50291 Certified, CO Alarm Detector with Digital Display, Battery Powered, 10 Year Sensor

High Valued Alarm Features Automatic self-check function, Alarm concentration record and Test Silence features. False alarm can be silenced by press "Test" button

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

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.

~~£ 59.99~~ free shipping

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Neoteck Portable CO2 Meter with Monitor CO2 and TVOC Values, Carbon Dioxide Detector Multi Color Alert System Brightness Sound Adjustable for Home Indoor

Dual Monitoring Function Neoteck Portable CO2 Meter simultaneously monitors CO2 (0-5000 ppm) and TVOC (0-2000 mg m ) levels, ensuring optimal air quality. CO2 and TVOC values automatically switch every 5 seconds with an accuracy of 50ppm and size is only 80mm * 47mm * 20mm, and it is also equipped with a special hanging rope for easy carrying or hanging

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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 all-in-one monitor. Stay informed about multiple factors affecting the air you breathe with this multifunctional device

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Kidde 5DCO 10 Year Life Battery Powered Digital Display Carbon Monoxide Alarm

Digital display of CO levels from 30ppm. Detector alarms from 50ppm.

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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)

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.

~~£ 11.99~~

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CO2 Detector, Co2 Monitor Carbon Dioxide Monitor, Co2 Sensor Digital USB Charger Air Quality Sensor Detector with Temperature Humidity for Home Office Gym Car(White)

TVOC Sensor The co2 detector design with TVOC sensor to monitor CO2 value, temperature and humidity of air quality, highly recommend to use it with USB charge

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CPVAN Wireless 3-in-1 Carbon Monoxide Detector with Temperature & Humidity, Carbon Monoxide Alarms for Home Safety, CO Alarm with 10 Years Life, EN 50291. 1 Pack

Safety Certification Compliance with EN 50291 standard and TÜV approval.

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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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Gofemial CO2 Monitor Detector Carbon Monoxide, 5 in 1 CO2 Detector Alarm Carbon Dioxide Detector Indoor Air Quality Monitor Temperature Humidity SensMonitor LCD Display Home OfficeGym Car

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The best carbon dioxide detectors in comparison

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