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Wireless CO2 Sensor



Use this wireless sensor to measure the concentration of Carbon Dioxide gas in a closed system or open environment. Study core topics (including photosynthesis, respiration, and carbon cycling) with this versatile probe. CO2 data can be logged directly on the device for long term life science and environmental science studies.


Typical Applications

  • Measure CO2 uptake during photosynthesis in a terrarium
  • Compare indoor vs. outdoor CO2 levels
  • Study cellular respiration of yeast
  • Conduct chemical reaction studies

Special Features

  • Simplicity: just pair and go
  • Variable sampling rate for capturing small fast changes or experiments that run for hours, days, or weeks.
  • Features convenient Bluetooth wireless connectivity and long-lasting rechargeable battery
  • Logs conductivity data directly onto the sensor for long-term experiments. (Logging feature required PASCO Capstone 1.6 or later or SPARKvue 2.5 or later)

New Accessory:  The Dissolved Water Proof CO2 Sleeve (PS-3545)  shields the sensor from water, but is permeable to CO2 allowing for measurements of dissolved carbon dioxide levels. This PASCO exclusive opens up new applications for this carbon dioxide sensor.


The Wireless CO2 sensor received an Award of Excellence from Tech & Learning in the "Best New Products" category for 2017.

AwardsExc2017 195675