The Extech 445703 Big Digit Hygro-Thermometer has 1 inch (2.54 cm) digits on a particularly large LCD display. It simultaneously displays humidity from 10 to 99 % and temperature from -10 to 60 °C. The accuracy is ±5 % rel. and ±1.8 °F / ±1°C. Maximum/minimum with reset function. The scope of delivery includes a stand, a wall mounting bracket and a AAA battery.