**Please Note: The CO2Meter offices will be closed in observance of the US Thanksgiving holiday beginning at 5:00 pm et. Wednesday, November 24. All operations will reopen Monday, November 29 at 8:30 am et. Orders placed after noon et. November 24 will be fulfilled on November 29. Happy Holiday!**

ExplorIR®-W 100% CO2 Sensor

ExplorIR®-W 100% CO2 Sensor
Regular price $109.00

POs or wholesale quantity discounts click here

The ExplorIR®-W (formerly known as CozIR Wide Range) is a low power, high performance CO2 sensor that can measure up to 100% CO2 levels.

It is suitable for measuring high concentrations of CO2 in closed-loop sampling applications or battery operation in portable sampling instruments.

Based on infrared LED technology and innovative optical designs, the COZIR combines the accuracy of NDIR technology with wide-range CO2 measurement in a flexible package for OEM integration.


  • 0-100% carbon dioxide measurement
  • Durable, low power consumption
  • Integrated into harsh environments, in varying degrees of pressure
  • Industry standard serial communication
  • Simple to install, precalibrated and ready-to-use


GC-0016 ExplorIR®-W Sensor Only - for integration into high-volume OEM products. Contact us directly for wholesale pricing on large quantities of this sensor.

CM-0121 Development Kit - Easy to use, simply plug the sensor module into your PC via the included serial UART to USB cable. Use our free GasLab® software to measure and graph carbon dioxide, to configure the sensor or for data logging.


  • Measurement Range: 0-100% CO2
  • Sensing Method: NDIR with Gold-plated optics
  • Sample Method: Diffusion (default) or sampling with optional tube adapter
  • Accuracy: ±70 ppm ± 5% of reading
  • Resolution: 100ppm
  • Sample Rate: 500 ms (2 Hz) measurement interval
  • Response Time Filter: 4 secs to 2 mins (user configurable)
  • Serial communications: 9600/8/1/N
  • Analog voltage output proportional to CO2 concentration
  • Warm-up Time: < 10s
  • Operating Conditions: 0°C to 50°C, 950 mBar to 10 Bar
  • Sensor Life Expectancy: > 15 years


  • Power Input: 3.3 ±0.1 volt  DC < 3.5 mW
  • Peak current: 33mA
  • Weight: 8 grams
  • Devkit includes 6’ (1.8m) USB cable (non-standard)


  • 90 days - See CO2Meter Terms and Conditions.

Datasheet Data Sheet (pdf)

COZIR Manual Manual (pdf)

Quick Start Guide Devkit Quick Start Guide (pdf)

Incubation White Paper Incubation White Paper (pdf)

Dimensional Drawings Dimensional Drawings (pdf)

GSS Quality Certification Quality Certificate - ISO9001 (pdf)

Documentation Arduino Sample Code (zip)

Documentation Labview Examples for SenseAir K30 and COZIR CO2 Sensors (zip)


View GSS CO2 Sensor Application Notes, Here. 


Free Easy-to-use GasLab™ Software

This device uses GasLab® software for setup, calibration, data logging, and real-time data analysis. GasLab® makes it easy to export data into a .CSV file that can be imported into any industry-standard software or spreadsheet. GasLab® runs on Windows XP or higher, and free to use with our products.

Download Latest Software Here




  • Data Sheets

  • Manuals

  • Technical Documents

  • Videos

  • Additional Resources

Customer Reviews

Based on 11 reviews

It´s a very good thing


ExplorIR®-W 100% CO2 Sensor

Muy facil de controlar

Lo estamos testeando y por ahora no hemos encontrado ningún problema. La unidad llegó muy rápido con transporte normal (no urgente) Lo que nos parece tener un precio alto es el adaptador hacia el gas (capuchón) (32€)


ExplorIR®-W 100% CO2 Sensor

Easy to set up and use.

The sensor arrived timely and this was important since I needed it for a project. The ease of set up and instructions provided in Application note saved me a lot of time!

"Easy to install, easy to set up, and easy calibration - just what I was looking for."

- Phillip Farrar
Water Plant Superintendent

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