Good ventilation of the rooms reduces the risk of infection. Independently of this, a good room climate also promotes the ability to concentrate. With the LogiLink CO2 meter you always have a perfect overview about the indoor air and when it is time to ventilate. A concentration of <1000 ppm is hygienically safe. A concentration between 1000 and 2000 ppm is classified by The Federal Environment Agency as a hazard and anything above that is unacceptable. But with the large LCD display, you can read more than just the CO2 concentration. The built-in data logger also measures the temperature and humidity in weekly, daily, hourly and minute intervals.