The Extech 445703 Big Digit Hygro-Thermometer features large 1" digits which display temperature (switchable °C/°F) from 14 to 140°F and humidity from 10 to 99%RH. A memory reset function will save maximum and minimum measurements. The hygro-thermometer includes low battery indication, built-in tilt stand, wall mounting bracket and 1.5V AAA battery.