Standard headpiece for pendant lights. With integrated carbon dioxide sensor for measuring the CO2 concentration in the ambient air and a 3-stage LED traffic light to indicate air quality and the need for ventilation. The measuring ranges of the LED indicators are based on the recommendations of the Federal Environment Agency for reducing the risk of transmission of SARS-CoV-2 indoors through suitable ventilation measures: Green < 800 ppm, yellow 800 - 1400 ppm, red > 1400 ppm CO2 concentration.
