Temperature measurement range:-50-500 (-58-932Display resolution: 0.1 or 0.1 Automatic shutdown function (about 8 secondsEmissivity:0.95 preset: Most organic materials and painted or oxidized surfaces have an emissivity of 0.95 (pre-set in the unit). Inaccurate readings will result from measuring shiny or polished metal surfaces. To compensate, cover the target surface with masking tape or flat black paint. Measure the tape or painted surface when the tape or painted reach the same temperature as the material underneath.LCD backlight (convenient for use at night).When backlight is on,any operations will activate the backlight.Power: AAA*2 batteries/ conversion selection functionData hold: When pull the trigger, LCD display reading with SCAN icon. Release the trigger, display reading with HOLD icon. Built-in 8 sec auto power off function.