Before mold comes high air humidity. That’s why the hygrometer is essential for a healthy indoor climate. As soon as the air humidity exceeds the set threshold, the mold warning symbol appears on the LCD display, with upper and lower limits individually programmable. The hygrometer’s additional functions include displaying the dew point from 0 to 50 degrees Celsius, a 12-hour air humidity history, and displaying five different humidity levels: too dry, dry, optimal, moist, too moist. The integrated thermometer measures room temperature in degrees Celsius and Fahrenheit.