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CozIR®-A Carbon Dioxide Sensor


The GSS CozIR®-A CO₂ sensor is a low-power NDIR CO₂ sensor using state-of-the-art solid-state LED optical technology. The LED technology enables the CozIR®-A to reduce power consumption to levels that make it particularly useful for battery powered or wireless interface applications where power is at a premium.

CozIR®-A is a universal sensor option for ambient sensing applications with an easy to use UART digital interface or a low impedance voltage output for CO₂ measurement readings. The CozIR®-A features built-in auto-calibration ensuring the sensor exhibits high accuracy over the lifetime of the sensor. In addition, the CozIR®-A CO₂ sensor has a number of several user-definable choices to optimise integration into a wide variety of environments including different mechanical mounting options and extended temperature ranges.


  • Ultra-low power CO₂ sensor
  • 30ppm (typ.) measurement accuracy
  • Solid state LED optical technology
  • Optional Temperature and Relative Humidity sensing
  • Optional Analogue (Voltage) output
  • UART data interface
  • Built-in auto-calibration
  • California Building Standards Code, Title 24 compliant


  • Indoor Air Quality (IAQ)
  • IoT and Smart Technology with wireless equipment
  • Air Quality and HVAC Systems
  • Building Management Systems (BMS)
  • Demand-Controlled Ventilation (DCV) systems
  • Transport
  • In-Cabin Air Quality


CozIR®-A Data Sheet, Revision 4.11
pdf - 746 KB
CozIR®-A Product Flyer, Revision 1.8
Product Flyer
pdf - 681 KB
CozIR® Evaluation Kit Product Flyer, Revision 1.3
Product Flyer
pdf - 399 KB
EvaluatIR®-A Product Flyer, Revision 1.4
Product Flyer
pdf - 615 KB
Sensor Evaluation Kit User Guide, Revision 1.4
Evaluation Kits
pdf - 544 KB
EvaluatIR-A Evaluation Kit User Guide, Revision 1.1
Evaluation Kits
pdf - 913 KB
EvaluatIR Software, Revision 1.3
zip - 875 KB
Evaluation Kit Software, Revision 2.3
zip - 976 KB