Better accuracy: The distance to spot ratio is 12: 1, meaning the laser grip 774 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 inches (36cm) Target quicker: measure surface temperature ranging from -58? to 716?/ -50? to 380?, you can choose the unit from ?/ ?; response time: ?500Ms; a built in laser gives you the precision to hone in on the exact space you want to measure Added functions: the LCD screen 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). Storage Temperature: -20-50??(-4-122?). Operating Temperature-0-50??(50-122?) 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 tasks Note: the thermometer can't measure the internal temperature of an object; temperature readings from this devices are inanimate objects, the measured temperature for humans or animals will not be correct; FDA, FCC, CE compliant; class 2 laser, optical power 0. 5-0. 9Mw