The Extech 42510A Wide Range Mini IR Thermometer measures temperature from -50°C to 650°C (-58°F to 1200°F) with a 0.1 degree resolution for readings up to 999.9 degrees. The adjustable high/low set points with audible alarm notify users when temperatures exceed the programmed set points. It has adjustable emissivity for greater accuracy on a wide range of surfaces. It has a built-in laser pointer that can assist you locate target regions. Built-in backlighting lights the display, allowing you to take measures at night or in low-light environments. 12:1 distance to target ratio. It includes data hold, min/max, over range indicator, and auto power down capabilities. Comes with 9 V battery and bag case.