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Analog Infrared CO2 Sensor - High Sensitivity

DFRobot DFRobot



Take charge of your air quality with the Analog Infrared CO2 Sensor, offering NDIR technology for extreme-precision CO2 concentration control.

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Pollution is a serious problem in our world, and unfortunately shows very little sign of slowing down as we our society continues to expand and develop in a wide range of different ways. However, what may be the biggest problem with the current scenario we face is the fact that we can’t always see the pollution that affects us most. And while we can certainly see litter on our landscapes and rubbish in our rivers, we can’t always see air pollution, and this can be quite dangerous depending on the levels of pollution in the air – which we of course can’t recognise without the use of clever Sensors.

This is what makes the Analog Infrared CO2 Sensor such a great choice for Healthy Makers who want to breathe oxygen-rich air keep their brains pumping at maximum capabilities, as it allows us to measure factors that lie beyond what our eyes are capable of seeing, enabling us to carefully control our air quality with precision – leading to a healthier, happier environment for us to thrive in.

This clever little carbon dioxide sensor offers an impressively high precision, and is capable of measuring between 0 and 5000 parts per million of carbon dioxide in an environment via the use of non-dispersive infrared technology. This means you can utilise this sensor to ensure perfect air quality for a range of different applications, as well as just for health reasons, so that you, your family and even your pets can enjoy the healthiest breathing-air possible.


Analog Infrared CO2 Sensor  -  Technical Specifications:

  • Operating Voltage

– 4.5V to 5.5V DC

  • Operating Current (Typ. / Peak)

– <60mA to 150mA (@5V)

  • Output Signal

– Analog Output 0.4V to 2V (Via Signal Pin)             

  • Gas/Molecule Detection

– Carbon Dioxide (CO2)

  • Detection Range

– 0 to 5000ppm

  • Detection Accuracy

– ±50ppm +3%

  • Preheating Time

– 3 Minutes

  • Response Time (Typical)

– 120 Seconds

  • Expected Service Life

– >5 Years

  • Operating Temperatures

– 0° to 50°C

  • Weight

– 34g

  • Dimensions

– 37 x 69mm


Typical Applications for this High Sensitivity Analog Infrared CO2 Sensor:

With such a high level of sensitivity, this Analog Infrared CO2 Sensor is most commonly used for breathing-air quality control, as well as similar types of applications requiring the lowest carbon dioxide concentration as possible. This is because the sensor’s high level of accuracy only allows for measurements up to 5000 parts per million, which is actually quite low compared to what you would find in some environments, and this unfortunately means that it’s not ideal for building indoor gardening setups requiring high levels of CO2. However, for any and all applications involving extremely low levels of carbon dioxide – or at least striving to achieve such a level – this sensor’s extreme sensitivity and high precision is perfect.


Additional Resources:

  • This is the official DFRobot NDIR CO2 Sensor Wiki Page, which offers a wealth of information about this sensor module, as well as insights on how to calibrate and utilise it, with included code examples to get you started.


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Analog Infrared CO2 Sensor - High Sensitivity

Analog Infrared CO2 Sensor - High Sensitivity

As self-proclaimed “Robo-holics”, DFRobot is a company comprised of over 100 staff members, of which 30% are engineers who love to build robots. It was started in 2008 with the goal of embracing and promoting open-source hardware, with a core focus on Arduino, Raspberry Pi and their very own LattePanda development boards. Since then, DFRobot have manufactured over 1300 unique modules, sensors and components that all work together and complement each other, allowing users like us to enjoy a full spectrum of cutting edge robotics and electronics without having to pay premium prices.

With the primary goal of developing and manufacturing great quality products, while making them accessible to as many people as possible, DFRobot are rapidly becoming one of the most common-place brands in the world of open-source robotics and electronics. With more than 1300 products developed in-house, and an impressive range of different categories and specialisations, there are few brands in the world who can compete in terms of quality, accessibility and genuine innovation.