Use the probe to quickly check the indoor climate, for example in offices, production areas or in warehouses. As well as temperature, humidity and absolute pressure, it also measures the carbon dioxide concentration (CO₂).

The CO₂ concentration is a primary indicator of indoor air quality. Poor air quality due to excessive concentrations of CO₂ can cause tiredness, lack of concentration and even illness. Therefore the CO₂ concentration should normally not exceed 1000 ppm.