Just take a deep breath. Most of us spend up to 90Percent of our lives indoors. The air is often poor there, the humidity is too low, the temperature is suboptimal or the air is polluted with pollen, dust, or odors. However, it is very easy to create a healthy indoor environment and atmosphere of well-being within your own four walls. the beurer HM55 thermometer/hygrometer means you can keep an eye on the indoor temperature and humidity level at all times. Its Warning function enables you to always maintain a climate that is comfortable for you. The beurer fresh room app provides clear, long term monitoring and can even be used for multiple rooms.