The 42510A Compact thermometer measures temperature from -58 to 1200°F (-50 to 650°C) with 0.1 degree resolution for readings up to 999.9 degrees. Adjustable High/Low set points with audible alarm alerts user when temperature exceeds the programmed set points. Adjustable emissivity for better accuracy on a variety of surfaces. Built-in laser pointer identifies target area. Backlighting illuminates display for taking measurements at night or in areas with low background light levels. 12:1 distance to target ratio. Data Hold and Min/Max, Over range indicator and Auto power off functions. Complete with 9V battery and pouch case.