The Extech 42545 is a high temperature IR thermometer with a temperature measurement range of -50 to 1000 °C. The thermometer features a distance to target ratio of 50:1 and a single laser that identifies the target area. Measures smaller surface areas from a greater distance for safe and precise readings thanks to the high distance to target ratio (50:1). Large backlit LCD display. Adjustable emissivity. Complete with 9V battery and carrying case.