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CozIR®-Blink CO2 Sensor


The CozIR®-Blink is an ultra-low power NDIR CO₂ sensor using state-of-the-art solid-state LED optical technology. The low-power LEDs are manufactured in-house, giving GSS complete control of the CO₂ sensor signal chain.

The CozIR®-Blink uniquely allows users to reduce the power consumption of CO₂ measurements to unprecedented levels. The CO₂ sensor can be power-cycled, allowing the user to wake-up the unit from a dormant state, take a reading, and then power it down completely again, reducing power consumption to zero. The power cycling function is particularly valuable in battery-powered or wirelessly connected interface applications where power is at a premium.

The CozIR®-Blink also features a built-in auto-calibration function that maintains CO₂ measurement accuracy over the lifetime of the product.


  • Ultra-low power CO₂ sensor
  • 30ppm (typ.) measurement accuracy
  • Solid state LED optical technology
  • UART or I²C control and data interface
  • Power cycling compatible
  • Built-in auto-calibration
  • California Building Standards Code, Title 24 compliant


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


CozIR®-Blink Data Sheet, Revision 4.25
pdf - 1756 KB
CozIR®-Blink Product Flyer, Revision 1.6
Product Flyer
pdf - 557 KB
CozIR®-Blink Sensor Evaluation Board Product, Flyer Revision 1.2
Product Flyer
pdf - 378 KB
CozIR®-Blink Sensor Evaluation Board User Guide, Revision 1.2
Evaluation Kits
pdf - 948 KB
Sensor Evaluation Board Software, Revision 1.3
zip - 12828 KB
Ultra-Low-Power CO₂ Sensors Enable Wireless Remote Monitoring for Building Management Solutions and IoT Connectivity White Paper, Revision 3.0
White Paper
pdf - 492 KB
What is fresh Air White Paper, Revision 2.0
White Paper
pdf - 290 KB
CozIR-Blink Pinned CAD
zip - 877 KB
CozIR-Blink Unpinned CAD
zip - 1100 KB
AN010 Interfacing a GSS CozIR-Blink Sensor to your System, Revision 1.0
Application Notes
pdf - 209 KB