Best Co2 Detectors

In this article, we’ve put together a collection of the best co2 detectors that are currently trending on the market. We used AI and big data to analyze dozens of reviews and ratings on different co2 detectors. Based on certain criteria, here we are presenting the top 10 co2 detectors that you can consider buying for your needs. To make your choice easier, we constantly update this collection of co2 detectors with new and trading models. When you make any purchase through our link, we may earn some commissions.

10 Best Co2 Detectors

Based on overall quality, performance, features, price, and customer reviews, the followings are the top 10 best selling co2 detectors:

Product Highlights:
  • MONITORING & ANALYSIS Allows continuous monitoring of CO2, RH & Temperature Level. Data output to PC every 2 seconds.
  • MULTIPLE MEASUREMENT DISPLAYS AT ONCE- CO2, Temperature, and Relative Humidity readings are all shown on the LCD display at the same time
  • NORMAL/ MAX/ MIN/ AVERAGE (15mins/ 8hrs) MODE- It can show not only the normal, maximum and minimum CO2 readings but also the weighted average CO2 readings in the past 15mins (STEL mode) and 8 hours (TWA mode).
  • AUDIBLE CO2 SOUND- The alarm beeps when the CO2 Level exceeds the preset value. The alarm threshold is adjustable.
  • NDIR SENSOR for CO2 DETECTION- Non-dispersive infrared technology is used to ensure the reliability and long-term stability. Measures 0~9999ppm while 0~2000ppm can maintain a high accuracy at +/- 50ppm
Product Highlights:
  • [High-performance chip]: Use more professional infrared optical principles to quickly detect carbon dioxide. Accurately capture the generated weak current through the electrochemical reaction process, and accurately calculate the carbon dioxide evaluation result.
  • [Color screen]: Color large screen design, carbon dioxide concentration and temperature are clear at a glance. Both temperature and humidity can be clearly expressed through data. Small and portable, easy to carry.
  • Real-time display: using high-precision sensors, real-time monitoring, pollution data, carbon dioxide concentration per cubic meter and real-time display of Tvco value. Carbon dioxide is updated in real time at 1 second/hour.
  • [Multifunctional carbon dioxide meter]: It has the inspection functions of carbon dioxide measurement, Tvoc detection, Hazard evaluation, temperature and humidity detection, gas recognition algorithm, multiple anti-interference, air convection technology, greenhouse compensation, etc.
  • [Applicable fields]: It can be used in various occasions such as agricultural planting, greenhouse vegetables, production warehouse, interior decoration (family, educational institution, business office). Note: Due to the unstable air environment, the sensor of this product will affect the environment, and the data will change slightly.
Product Highlights:
  • Accurate Detection: A High-Precision NDIR sensor is adopted in the detector. It works quickly, stably, and won't be affected by temperature or other conditions than outdated Chemosensor.
  • Data Logger with Trending Display: Built-in storage for continuous data logging, you can track trend data up to 7 days for CO2 concentrations, temperature, and humidity. And it displays the Max & Min value.
  • Two Detection Modes: Human and Plant. Human mode detects if you are in a healthy range. Plant mode detects whether the plant is growing in a good condition.
  • Tabletop or Wall Mount Use: Two use way, Wall-mounted or Tabletop design. You can set it on a stand or mount it on the wall with a mounting hole on the back.
  • Automatic & Manual Calibration: Offer two calibration modes, Manual Calibration, and Automatic Calibration. We have calibrated it manually in the factory, and it can automatically calibrate during the detection.
Product Highlights:
  • Dual-channel NDIR Sensor: Provide high accuracy and fast measurement response.
  • Data Logger & Export data: You can view up to 7 days of history reading. It allows you to change the tracking intervals to determine how often your device logs track points. And you can export data to a .txt file and save it on your PC.
  • Flexible Touch Screen: 3.5 inches large colorful TFT Capacitive Touch Screen, compact and elegant appearance.
  • PIN Code Access Feature: You can set up a screen lock to help secure your device.
  • Multiple Customization Options: You can customize the screen feature according to your preference, such as language, brightness, color, etc.
Product Highlights:
  • ACCURATE & RESPONSIVE: With an advanced Figaro electrochemical CO sensor and high-performance ST chipset, the X-Sense carbon monoxide alarm instantly and accurately detects CO, an invisible, deadly gas, giving you the earliest possible warning of CO threat with both a loud 85 dB alarm and a rapid flashing red LED
  • 10-YEAR 24/7 PROTECTION WITH REPLACEABLE BATTERY: Powered by 3 replaceable 1.5 V AA batteries and a 10-year sensor life, this CO alarm provides 24/7 protection, even during power outages; a low battery warning informs you when the batteries need to be changed, and an end-of-life warning lets you know when it’s time to replace the unit
  • REAL-TIME CO LEVELS SHOWN ON THE LCD: Clearly displays the battery life and real-time CO levels taken from the surrounding air, with an updated measurement taken every 10 seconds; responds to various CO levels, with the lowest alarm threshold at 30 ppm, ensuring the ultimate CO protection
  • EASY INSTALLATION: No need to worry about wires or wall outlets, as our battery-operated CO alarm is equipped with screws and anchor plugs, so you can install it easily and quickly wherever you want
  • QUALITY ASSURANCE: Backed by a 60-day money-back and an incredible after-sales service team that will help you resolve any quality issues you have within 5 years; our lifetime technical support team will respond to you within 24 hours
Product Highlights:
  • Large screen: 5.5-inch large screen, large screen display makes it easier to read data, convenient and intuitive, clear division, pollution level, and easy operation of buttons.
  • Multifunction: the detectable substances include Co, CO2, HCHO, TVOC and AQI.
  • Suitable for multiple places: easy to carry, suitable for home, car, office, factory and other environment, 24-hour real-time monitoring to protect your and your family's healthy life and safety.
  • Durable power: it has three colors and other display power, with battery power display, it is more convenient to use, built-in polymer battery, energy-saving and environmental protection, long standby time, 3 hours of charging, continuous use of 4 hours, continuous air monitoring while charging, to ensure timely detection of air quality problems.
  • High precision, more accurate detection: the use of natural air flow detection technology, more accurate determination of air quality problems.
Product Highlights:
  • Digital Display - Displays the level of carbon monoxide the unit is sensing. Shows CO level in PPM (parts per million). Updates digital reading every 15 seconds, allowing you to see if levels change. Peak Level Memory displays the highest CO concentration measured since the last reset
  • Battery Operated - Provides the best protection during power outages. Battery safeguard makes it difficult to close the cover without batteries in the unit. Low battery signal alerts user when the batteries need to be replaced. Slide-out battery door cover gives immediate access to batteries
  • Test/Reset Button - Tests unit’s electronic circuitry & horn and resets the unit during alarm. Tests CO alarm circuit operation and allows you to immediately silence the alarm
  • LED's - Green LED for normal operation, Red LED for alarm. Temperature range 40˚F (4.4˚C) to 100˚F (37.8˚C). Sensor: Electrochemical
  • Provides peace of mind against the silent killer and a digital display
Product Highlights:
  • Accurate Detection: Using non-dispersive infrared technology (NDIR), full-scale temperature range correction. It won't be affected by temperature or other conditions, fast response, resolution up to 1 ppm, measuring range up to 0 to 5000 ppm.
  • Humanized Design: The indoor air CO2 meter has two types of air quality warnings, namely a three-color LED indicator light and a facial expression display, which makes the air quality more intuitive.
  • Exquisite Appearance: This CO2 monitor controller with a simple design, lightweight and easy to carry, 3.9-inch LED screen with an elegant appearance. The minimalist design is suitable for any style of decoration.
  • Different Usage Scenarios: The portable smart carbon dioxide detector can help us detect the carbon dioxide content in the living room, kitchen, bedroom, office, school, car, hotel, travel, camping, party, etc. It is especially suitable for families with pregnant women, the elderly, and children.
  • What You Get: English user manual * 1; USB cable * 1. Our CO2 detector has a 12-month guarantee and lifetime technical support. If you have any problems with the goods you receive, please contact our support team as soon as possible. We will serve you wholeheartedly.
Product Highlights:
  • Tamper resist feature – Can be activated to cause unit to go into alarm if it has been unplugged or has come loose from the outlet
  • 2 LED’s: Red - Illuminates when in alarm mode. Green – AC power is present, normal operation
  • Test/reset button: Tests CO alarm circuit operation and allows you to immediately silence the alarm
  • End of life alarm: Alerts user to replace CO alarm after 10-years of operation
  • Provides peace of mind against the silent killer; Temperature range: 40˚F (4.4˚C) to 100˚F (37.8˚C)
Product Highlights:
  • Keep your family safer with this hardwired smoke and carbon monoxide alarm; The 10 year battery backup means constant monitoring for the life of the alarm even if there's a power failure
  • Features an electrochemical Carbon Monoxide sensing technology as well as intelligent smoke sensing technology to reduce nuisance alarms; Keyhole slots in the mounting bracket eliminate the need to remove the electrical box screws for installation
  • Indicator lights on the face of the unit display the presence of smoke or carbon monoxide, while an 85 decibel siren provides a clear, loud warning upon detection
  • Simple to use, with a single test/silence button; Included 10 year lithium battery features a locked drawer to prevent tampering
  • 10-year limited warranty; Equipped with end-of-life signal chirp, so you know when it’s time to replace the unit for safety

Last update on 2021-06-13 at 06:14 / Affiliate links / Images from Amazon Product Advertising API

So, these are the best co2 detectors available on the market. We strongly recommend checking out the features, specifications, and real customer reviews before choosing any co2 detectors. To help you make your choice easier, we’ve prepared the following buying guide:

How to Choose the Right Co2 Detectors?

Since there are dozens of brands offering various types of co2 detectors on the market, it becomes very difficult for both new and experienced buyers to pick the right one. In order to get the perfect co2 detectors for the money, you need to consider the following factors:

Quality & Performance

Your top priority when shopping for co2 detectors should be quality and performance. You should find out what materials are used in making the co2 detectors. Try to make sure that the model you are choosing is of top-notch quality.

Brand Recognition

As we mentioned earlier, there are dozens of brands offering various types of co2 detectors. Top-tier brands are reliable and offer high-performing co2 detectors. So, you need to consider choosing the perfect co2 detectors from a reputed brand.

Features & Specifications

We already mentioned some of the key features and specifications of top-quality co2 detectors. You should check out the specifications and features of each of these co2 detectors before making your decision.

Rating & Customer Reviews

Finally, take a look at the overall customer rating and real customer reviews of each of these co2 detectors. This will help you make the right decision.


Price is another important factor that you need to consider when buying co2 detectors. Though it always depends on your budget, you shouldn’t compromise any essential features for the price. In order to buy the perfect co2 detectors, you should consider all of the factors mentioned above.

Final Words

We strongly believe that you will be able to find the best co2 detectors from the above list. However, we recommend that you read the specifications and features of each of these co2 detectors before deciding the right one for your needs.

Leave a Comment