VERSATILE DESIGN: Infrared technology makes this thermometer handy to measure the surface temperature of various objects especially temperatures above boiling points and below freezing points; Use it when you are cooking and barbequing, performing auto maintenance, doing home repairs, and a host of other tasksNOT FOR HUMAN: Temperature readings from this device are inanimate objects, the measured temperature for humans or animals will not be correct. Class 2 laser, optical power 0. 3-0. 49MwBETTER ACCURACY PLUS ADJUSTABLE EMISSIVITY: The distance to spot ratio is 12: 1; Adjustable emissivity improves measurement accuracy across different surface types, just regulate the emissivity of your 1022D according to the instruction (0. 1-1. 0), for best accuracy, the distance between the thermometer and object of measurement should approximately be 14. 17 inches (36cm)MULTIFUNCTION: 1022D features with maximum measure function; The LCD screen is back-light, it also has an auto-off function and a low battery indicator to extend the battery life so you never accidentally run out of juice (battery included)DUAL LASER PLUS TARGET QUICKER: Dual-laser targeting technology makes it easier to visualize the area being measured by an IR thermometer, resulting in higher precision versus a single laser; Measure surface temperature ranging from -58F to 1022F/ -50C to 550C; Response time: 500Ms