This will accurately indicate the indoor temperature and relative humidity in your house. The digital display will show the temperature, ranging from -58 degrees Fahrenheit (-50 deg. C) to 158 degrees Fahrenheit (70 deg. C), with an accuracy of +/- 0.9 degrees. It will also simultaneously show the relative humidity, over a range from 5% to 95%, with an accuracy within 5 percent from 20% to 60% and +/- 10% under 20% humidity and over 60% humidity. The temperature may be shown in either Celsius or Fahrenheit, and the base unit will retain both low temperature and high humidity readings in memory. This ThermoHygro Thermometer is designed for residential us for normal humidity between 25% and 60%. The unit may be either wall mounted or set on a tabletop. One AAA battery required (included).
Dimensions: 83mm W x 74mm H x 18mm D (3.3" x 2.9" x 0.7")