U.S. Solid Mini LCD Digital Indoor Temperature & Humidity Gauge Thermometer (Hygrometer) from USE: Mini LCD Digital Indoor Temperature & Humidity Gauge Thermometer (Hygrometer) will help you control humidity and temperature levels in your home or car. HUMIDITY: In your home, it can affect your health as well as your furniture, walls and floors, pictures, plants, etc. If the humidity is too high, it promotes the growth of fungus, molds, bacteria, and viruses that can cause musty smells and affect your health. If the humidity is too low, it can dry out your nose and throat as well as furniture, house plants, and paintings. Also, the humidity can affect your comfort level, which in turn affects your heating or cooling bill. SPECIFICS: The USS-TemHu00005 is a Mini Indoor Temperature & Humidity Gauge Thermometer (Hygrometer). It has a 46mm x 27mm instant-read LCD digital screen that displays temperature and humidity simultaneously. It is highly accurate; within 2F and 5%. It is powered by two LR44 Button Cell batteries (batteries NOT included) which are easily installed. SHIPS FROM CLEVELEND, OHIO, USA  EXPEDITED SHIPPING AVAILABLE