HDE Digital Hygrometer Indoor Outdoor Thermometer Digital Humidity and Temperature Monitor with LCD Display Thermometer simultaneously measures indoor and outdoor temperature and humidity Easy to read LCD display can show either Fahrenheit or Celsius temperature measurements Built in memory can record minimum and maximum temperatures with the push of a button Included wire probe can be used for outdoor measurements or in confined spaces such as Humidors Measures temperatures as low as -58 F and as high as 158 F (-50 C to 70 C) | Measures humidity from 25% RH to 98% RH