10 Best Carbon Dioxide Co2 Detector In The Us

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Last Updated - November 26, 2024

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Clicked 15 times in the last month

Temtop
Temtop Air Quality Monitor CO2 Detector Professional Carbon Dioxide PM2.5 PM10 Formaldehyde Temperature and Humidity Monitor w/Audio Alarm Data Export (M2000 2nd)

9.3 clearly written

8.9 User interface

8.7 Simple to use

Why we love it

Comprehensive air pollution monitoring with advanced sensors.

Customizable audio alarm and colorful air quality indicator.

USB data export and easy calibration for accurate readings.
Main highlights

Comprehensive Air Pollution Monitoring
8-IN-1 multifunctional CO2 monitor with advanced sensors for CO2, HCHO, particles, temperature, and humidity. Provides extensive data export and easy calibration.

Versatile Indoor and Outdoor Use
Ergonomic design with colorful TFT display, rechargeable battery, and portability. Ideal for home, office, lab, and travel.

Convenient Data Collection
Highly praised for USB downloadable history files and the ability to set data collection intervals. Convenient for tracking air quality over time.
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9.8

Exceptional

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Value for Money

2

DANOPLUS
DANOPLUS CO2 Meter Handheld CO2 Detector, 0-9999ppm Digital CO2 Monitor Temperature and Humidity Meter Carbon Dioxide Detector with NDIR Sensor Buzzer Alarm and Clibration Function for Home Grow Room
Main highlights

【Wide Mesurement Range】: CO2 monitor is designed with large measuring range.CO2: 0~9999ppm; Temperature:14°F-140°F(-10°C/+60°C); Humidity (0.1% - 99.9%RH); Dew Point: -20.0 - 59.9°C; Wet Bulb: -5.0 - 59.9°C
【Wide Application】 CO2 meter can accurately monitor air quality. CO2 detector is widely used in public places such as offices, classrooms, factories, hospitals
【Sound Warning Alarm】CO2 Monitor will beep and notify when the CO2 level exceed your desired threshold the preset thresholds.The alarm threshold is adjustable by user
【Large LCD Display】CO2 detector is equipped with a large LCD display and backlight function. CO2 meter displays real-time readings of carbon dioxide concentration, temperature and humidity at the same time
【High Accuracy】: air quality monitor is equipped with a stable NDIR Sensor, Accuracy of CO2: ±50ppm or ±5% of the reading; Accuracy of temp: ±0.6°C/±0.9°F; Accuracy of humidity: ±3%RH (at 25°℃,10~90% RH);±5%RH (at 25°C, others)
【Convenient Design】Carbon dioxide detector is designed with a portable handle for easy manual calibration of CO2 and humidity for accurate detection. The CO2 detector runs on batteries (included) or a 9V adaptor (NOTED: adaptor not included in kit)
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9.7

Exceptional

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3

Newentor
Newentor CO2 Monitor, Indoor Air Quality Meters, Carbon Dioxide Detector with Voice Alert, Large Display CO2 Tester, Temperature Humidity Sensor, Alarm Clock for Home, RV, Grow Tents, Black

9.3 clearly written

8.0 User interface

8.0 Precision

Why we love it

The CO2 sensor is very accurate

You can set an alarm for CO2 levels

The device also monitors temperature and humidity
Main highlights

[Carbon Dioxide Concentration Alerts]: The CO2 concentration alert value can be customized to make our life, work or production environment safer.
[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.
️ [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.
[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.
[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.
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9.6

Exceptional

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4

Lunarlipes
Lunarlipes Portable 4-in-1 Carbon Monoxide Detectors, Mini Carbon Monoxide and Carbon Dioxide Monitor with Magnetic Suction, RV CO CO2 Detector Alarm Temp/Humidity Sensor, CO CO2 Air Quality Monitor

9.1 Easy installation

8.4 worth the money

8.4 clearly written
Main highlights

【SHOP WITH CONFIDENCE】Your satisfaction is our top priority. We provide 3 years service and lifetime technical support for CO CO2 detector portable. If you encounter any problems, just contact us through Amazon Customer Service or Q&A and we will reply within 12 hours. risk-free shopping. Customer satisfaction is our tireless pursuit.
【OUTDOOR LANYARD & MAGNETIC SUCTION】The bottom of the CO CO2 air quality monitor can be placed freely, you can put it on the table in the living room, kitchen, bedroom, etc. And it is equipped with a special outdoor lanyard, which is convenient for you to carry and use in outdoor activities such as travel, camping, picnic, and adventure. There is also a magnetic function on the back of the CO CO2 monitor, which can be attached to any metal area such as home appliances or cars.
【LARGE CAPACITY BATTERY & FAST CHARGING】The MINI 4-in-1 CO detector has a built-in 1000mAh lithium battery for long-lasting power. Support QC2.0, PD3.0, AFC, USB C UFP (BC1.2 DCP CDP SDP) and other common fast charging protocols 10~65W charging. When the CO detector is not operated for 5 minutes, it will automatically turn on the energy saving mode (the brightness of the screen will be reduced), and you can click the "function button" to turn on the backlight.
【HIGH-PRECISION 4-IN-1 CO DETECTOR】The portable 4-in-1 carbon monoxide detector can monitor the current CO, CO2, temperature and humidity in the air in real time. Equipped with a high-precision sensor (10-year life), the detectable CO concentration range is 0~1000PPM, the CO2 concentration range is 400~5000PPM, and the temperature range is 14~122℉ / -10~50℃, humidity range is 0~95%RH. The data is accurate without delay and monitored in real time.
【CO2 LIGHT INDICATION & CUSTOMIZED ALARM VALUE】The carbon dioxide monitor can present a 3-stage light indication according to the CO2 concentration. 400~699PPM (green flashing=safe), 700~1499PPM (yellow flashing=warning), 1500~5000PPM (red flashing=danger). By default, the audio alarm sounds when it reaches 1500PPM. You can double-click the "Function Button" to customize the CO2 concentration alarm threshold. Note: The device must be in the "CO₂" interface before entering the CO2 custom setting.
【CO LIGHT INDICATION & CUSTOMIZED ALARM VALUE】The carbon monoxide monitor can present 3-stage light indication based on CO concentration. 0~99PPM (green flashing=safe), 100~149PPM (yellow flashing=warning), 150~1000PPM (red flashing=danger). By default, the CO monitor will sound an alarm when it reaches 150PPM. You can double-click the "function button" to customize the CO concentration alarm threshold. Note: The device must be in the "CO" interface before entering CO custom settings.
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9.5

Excellent

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5

LSENLTY
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

10% Off

9.9 clearly written

9.3 Precision

8.2 Battery Duration
Main highlights

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.
Notice: The product color ring step status display value is a fixed value, which is set by default according to international standards and cannot be changed.
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.
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 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.
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.
3 in 1 Air Quality Monitor: LSENLTY 3 1 CO2 monitor not only has all the basic functions (CO2, temperature, and thermometer hygrometer monitor) but also smart functions such as remote monitoring, CO2 concentration, temperature, and humidity graph We support this. Our indoor CO2 detectors are reliable and easy to use in homes, greenhouses, etc.
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9.4

Excellent

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6

TEKCOPLUS
CO2 Meter Portable CO2 Detector Digital CO2 Monitor with Alarm Function Carbon Dioxide Temperature and Humidity Meter, NDIR CO2 Sensor Indoor Air Quality Monitor for Home Office Grow Room

8.7 clearly written

8.0 Simple to use

8.0 Precision

Why we love it

Accurate readings: 50ppm or 5 for CO2 below 2000ppm, 10 for CO2 above 2000ppm.

Multiple readings displayed simultaneously.

Audible alarm for CO2 exceeding preset level.
Main highlights

High Precision and Wide Range
Features high-accuracy CO2, temperature, and humidity measurements with large range, and audible/visual alarms for immediate air quality improvement.

Ideal for Public Spaces
Perfect for monitoring air quality in offices, classrooms, factories, hospitals, and hotels to ensure healthy CO2 levels and ventilation.

Customer Praise
Most reviews highlight its large, easy-to-read LCD screen and the device`s accuracy as the most appreciated features.
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9.2

Excellent

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7

INKBIRDPLUS
INKBIRDPLUS Portable CO2 Detector, Mini Indoor CO2 Monitor, NDIR Sensor with Full Color LCD, for Home, Office, Travel (PTH-10C)

8.7 worth the money

8.7 Simple to use

8.7 Precision
Main highlights

Wide Application: Contains 1x CO2 detector, 1x lanyard, 1x 2m charging cable and user manual. This portable CO2 monitor is suitable for home, office, grow tent and more
Portable and Long-Lasting: Small and portable, the included lanyard allows you to take this portable CO2 sensor anywhere. Built-in 1000mAh lithium battery, it can be fully charged within 3 hours, and the battery life is about 72 hours
NOTE: We recommend that when using the detector for the first time, place the device in an open and uninhabited environment and manually calibrate it once to avoid inaccurate readings
High-Quality CO2 Detector: This portable CO2 meter uses an advanced NDIR sensor to detect carbon dioxide through infrared sensing technology, with high precision, strong anti-interference and excellent stability
HD Full-Color LCD Display: Full-color LCD display, clear and easy to read, eye protection. If there is no operation for 5 minutes, it will automatically enter the energy-saving ECO mode
CO2 Concentration Level: There are three indicator lights on this carbon dioxide monitor - green light for good (400~699ppm), yellow light for medium (700~1499ppm), red light for danger (1499~5000ppm)
Audible Alerts & Custom Alert Values: When the detected CO2 concentration exceeds 1500ppm, the device will also send out an alarm to remind you. And the CO2 alarm value is customizable
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8.9

Very Good

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8

Norpolifomor
Norpolifomor Indoor/Outdoor CO2 Carbon Dioxide Detector, 3-in-1 Portable CO2 Monitor,Temperature & Humidity, CO2 Meter with Alarm, for Home, Car, Grow Tents, Travel,Camping
Main highlights

Real_time Air Quality Meter:This air quality tester applies for indoor/outdoor environments which allows you to monitor CO2 levels, temperature, relative humidity in real-time.Note:Please allow the differece (about ±50 ppm)among different CO2 detectors.
Premium Carbon Dioxide Meter: Norpolifomor Premium air quality monitor always care for our breath and health indoor/outdoor. It enable detect air pollution at different scenarios,such as homes, kitchens, bedrooms, offices, schools, cars, hotels, travel, camping, etc.
Portable Air Quality Detector: CO2 Monitor built-in 1200mAh rechargeable battery. It can be used continuously for about 24 hours after fullly charged. It'so lightweight and compact to bring anywhere conveniently .
Necessity of Air Quality Monitor: Carbon dioxide (CO2) has no harm in low level as it coexists with our human being, but when it excesses a certain value, it will affect our breath system or other organs. It would be fatal if the concentration of carbon dioxide is too dense to breath. Thus, we ought to monitor the CO2 value of air wherever we are so that we all deserve a portable CO2 tester all the time.
Advanced NDIR Technology: Mini CO2 meter equips with high precisive NDIR sensor to detect carbon dioxide value accuratly and quickly. when the concentration of CO2 in the air exceed the setting alarm value(default alarm value: 1000 PPM), the buzzer will automatically alert people to keep the room or other confined space ventilated.
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8.8

Very Good

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9

LFF
LFF CO2 Detector, Air Quality Monitor Carbon Dioxide Tester, Indoor CO2 Monitor with Dual Alarm and Customized Acoustic CO2 Alarm, Portable CO2 Meter with Temp Humi and Backlight for Various Occasion

9.9 Simple to use

9.3 Battery Duration

8.4 clearly written

Why we love it

Accurately monitors CO2, temperature, and humidity in real-time.

Customizable CO2 alarm ensures timely ventilation alerts.

Large, colorful display is easy to read from anywhere.
Main highlights

Real Time Monitoring and Customizable Alarms
The multifunctional CO2 detector uses NDIR technology to monitor CO2, temperature, and humidity in real-time, featuring customizable alarm values and dual alarm clocks.

Ideal for Home Safety and Air Quality Monitoring
Perfect for ensuring fresh air in homes, monitoring CO2 levels in various rooms, and alerting users when ventilation is needed.

Highly Praised for Accurate CO2 Detection
Customers appreciate its accuracy in detecting CO2 levels, easy-to-read display, and the convenience of its portability and long battery life.
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8.7

Very Good

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10

Gain Express
CO2 Meter Air Quality Monitor Handheld CO2 Monitor 0~9999ppm Measurement Carbon Dioxide Temperature Humidity Detector NDIR Sensor Indoor Outdoor Air Quality Tester

9.3 Precision

9.1 clearly written

8.7 Simple to use

Why we love it

High accuracy

Large measuring range

User friendly
Main highlights

High Accuracy and Extensive Range
Features 0-9999ppm CO2 range, temperature, humidity, dew point, and wet bulb measurements with high accuracy and portable design.

Ideal for Public Spaces
Perfect for IAQ monitoring in offices, classrooms, factories, hospitals, and hotels to ensure optimal air quality and ventilation.

Customer Praise
Most reviews highlight the reliable NDIR CO2 sensor and the convenience of dual power options as the standout features.
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8.6

Very Good

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10 Best Carbon Dioxide Co2 Detector In The Us

1

Temtop Air Quality Monitor CO2 Detector Professional Carbon Dioxide PM2.5 PM10 Formaldehyde Temperature and Humidity Monitor w/Audio Alarm Data Export (M2000 2nd)

Why we love it

2

DANOPLUS CO2 Meter Handheld CO2 Detector, 0-9999ppm Digital CO2 Monitor Temperature and Humidity Meter Carbon Dioxide Detector with NDIR Sensor Buzzer Alarm and Clibration Function for Home Grow Room

3

Newentor CO2 Monitor, Indoor Air Quality Meters, Carbon Dioxide Detector with Voice Alert, Large Display CO2 Tester, Temperature Humidity Sensor, Alarm Clock for Home, RV, Grow Tents, Black

Why we love it

4

Lunarlipes Portable 4-in-1 Carbon Monoxide Detectors, Mini Carbon Monoxide and Carbon Dioxide Monitor with Magnetic Suction, RV CO CO2 Detector Alarm Temp/Humidity Sensor, CO CO2 Air Quality Monitor

5

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

6

CO2 Meter Portable CO2 Detector Digital CO2 Monitor with Alarm Function Carbon Dioxide Temperature and Humidity Meter, NDIR CO2 Sensor Indoor Air Quality Monitor for Home Office Grow Room

Why we love it

7

INKBIRDPLUS Portable CO2 Detector, Mini Indoor CO2 Monitor, NDIR Sensor with Full Color LCD, for Home, Office, Travel (PTH-10C)

8

Norpolifomor Indoor/Outdoor CO2 Carbon Dioxide Detector, 3-in-1 Portable CO2 Monitor,Temperature & Humidity, CO2 Meter with Alarm, for Home, Car, Grow Tents, Travel,Camping

9

LFF CO2 Detector, Air Quality Monitor Carbon Dioxide Tester, Indoor CO2 Monitor with Dual Alarm and Customized Acoustic CO2 Alarm, Portable CO2 Meter with Temp Humi and Backlight for Various Occasion

Why we love it

10

CO2 Meter Air Quality Monitor Handheld CO2 Monitor 0~9999ppm Measurement Carbon Dioxide Temperature Humidity Detector NDIR Sensor Indoor Outdoor Air Quality Tester

Why we love it

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