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Analyzer - max. 9 999 ppm, 0 - 50 °C | testo 535
The Testo 535 measures indoor air quality through CO2 measurements. High CO2 levels (greater than 1000 ppm) result in lack of concentration, tiredness and illness. The unit uses a stable 2-channel infrared sensor, provides accurate and efficient readings, and enables long-term monitoring through maximum and mean calculation of CO2 levels.