Extech 44550 Pocket Humidity Thermo-Hygrometer has sensors for both temperature and humidity. The ranges are: Humidity: 20 to 90% RH (5% RH), Temp: 14 to 122 degrees Fahrenheit or -10 to 50 degrees Celsius, Accuracy: 5%RH; 2 degrees Fahrenheit, 1 degree Celsius. This meter has incorporated Max/Min and Clear functions.