About this itemAccurate measurement and quick update: The combination thermometer and hygrometer provides a temperature measurement result between -10°C to 50°C, which is available in °C or °F. The measuring range of humidity is between 10% to 99%. The readings are automatically updated every 10 seconds thanks to the built-in sensitive sensorsInnovative room climate indicator: The humidity meter shows the current humidity and temperature in adorable symbols: dry, comfort, wet. If the room climate is too damp or too dry, the smiley is unhappy, so you can easily inform yourself about action needs for room climate controlHealthier Home: Thermometer hygrometer with temperature and humidity monitor ensures proper indoor humidity control has import.