Features: Handheld infrared thermometer, using an imported infrared temperature probe with stable performance and high accuracy. Wide temperature measurement range: -50~550C / -58~ 1022F. Sound prompt function. Selectable emissivity: 0.1~1.00. Auto power off for power saving. Selectable temperature units: Celsius(C) and Fahrenheit(F). Digital LCD display with backlight, convenient to read even in the dark. Compact size, user-friendly structure and easy operation.