A recent Harvard study measuring cognitive function scores in a controlled office environment demonstrated significant higher cognitive function scores at 550 ppm CO₂ level compared to 745 ppm CO₂ level. The largest effects were seen for Crisis Response, Information Usage, and Strategy, all of which are indicators of higher-level cognitive function and decision making. Sensirion's CO₂ sensor is based on dual-channel nondispersive infrared (NDIR) technology. CO₂ concentration is measured as a function of infrared light absorption. Read more