HIGH PRECISION: The indoor thermo-hygrometer offers a wide measuring range that can measure temperatures between 0.0 C and 50.0 C (32.0 F to 122.0 F). The temperature accuracy range is 1 C (1.8 F). The humidity sensor has a measuring range of 10% to 90%. The accuracy of humidity measurement is 5%. PORTABLE AND MINI SIZE: Are you looking for a mini indoor thermo-hygrometer that doesn't take up space and can be easily transported from room to room or even during your vacation? Are you looking for an ultra-simple thermometer? The thermo-hygrometer measures 75 x 83 x 21 mm, 90 g. It not only meets your daily needs, but also doesn't take up much space. It is the perfect tool for travel or indoor use (office, bedroom, living room, porch, etc.) REAL-TIME DISPLAY: The thermo-hygrometer provides you with real-time temperature and humidity. It records min/max temperature and humidity since the last reset or since the last 24 hours. It can operate in Fahrenheit or Celsius. EASY READING AND USE: The thermometer and hygrometer have no complicated function buttons. It has a clear digital display that is easy to read even from a distance. With just three buttons below the screen, you can either use Celsius/Fahrenheit, reset the tool, or view the minimum/maximum data recorded. Works with 1x AAA battery (not included) HIGH PRECISION: The indoor thermo-hygrometer offers a large measuring range, can measure temperatures between 0.0 C and 50.0 C (32.0 F to 122.0 F). The temperature accuracy range is 1 C (1.8 F). The humidity sensor has a measuring range of 10% to 90%. The accuracy of humidity measurement is 5%. PORTABLE AND MINI SIZE: Are you looking for a mini indoor thermo-hygrometer that doesn't take up space and can be easily transported from room to room or even during your vacation? Are you looking for an ultra-simple thermometer? The thermo-hygrometer measures 75 x 83 x 21 mm, 90 g. It not only meets your daily needs, but also doesn't take up much space. It is the perfect tool for travel or indoor use (office, bedroom, living room, porch, etc.) REAL-TIME DISPLAY: The thermo-hygrometer provides you with real-time temperature and humidity. It records min/max temperature and humidity since the last reset or since the last 24 hours. It can operate in Fahrenheit or Celsius. EASY READING AND USE: The thermometer and hygrometer have no complicated function buttons. It has a clear digital display that is easy to read even from a distance. With just three buttons below the screen, you can either use Celsius/Fahrenheit, reset the tool, or view the minimum/maximum data recorded. Works with 1x AAA battery (not included).