1.High Accuracy & Wide RangeLarge LCD display with simple and clear readings. DRY: humidity40%. The express changes following the changing of the humidity. 2.Air Comfort IndicatorThe room thermometer hygrometer has 3 types of icons (DRY/COMFORT/WET) to quickly inform you of adjustments to your humidifier or dehumidifier. It effectively detects the room climate to prevent colds, dry skin, asthma, allergies, mould and more, ensuring you always live in the most comfortable environment. 3.Easy to ReadThermometer indoor outdoor with a LCD display, allows you to easily read the current temperature and humidity from different perspectives, and you can switched to / for your convenience. 4.3 Mounting WaysThis digital thermometer with metal edge design and has 3 mounting options: Magnet Attaching, Table Standing, and Wall Hanging, which you can place the wall thermometer anywhere you like such as living room, baby room, kitchen, basement, office, greenhouse, office and garden. 5.Battery Powered & Easy to UseThe humidity monitor is powered by a button battery (included). There is only one / button on the back for your convenience. To switch, use something like a needle or toothpick.