NOT FOR HUMAN: The instant read thermometer can't measure the internal temperature of an object; The readings from it are inanimate objects, and the measured temperature for humans or animals will not be correct; Class 2 laser, optical power 0.5-0.9Mw BETTER ACCURACY: 12:1 D:S, this temperature gauge can accurately measure targets at greater distances compared to most other thermometers; For best accuracy, the distance between the thermometer and object of measurement should approximately be 14.17 in TARGET QUICKER: Measure surface temperature ranging from -58 to 1022/-50 to 550, and unit switching /. A built in laser gives you the precision to hone in on the exact meat cooking, griddles, pools, refrigerators, and any you want to measure ADDED FUNCTIONS: The LCD screen of the infrared thermometer is backlit, also has an auto-off function to extend the battery life, and features a low battery indicator so you never accidentally run out of juice (battery included) VERSATILE USES: With Infrared technology, the temperature gun can measure the temperatures above boiling points and below freezing points; Use it for cooking, pizza ovens, griddles, BBQ grills; A/C, refrigerators, pools; candy&soap making, etc