Wintact WT326D Portable Infrared Thermometer, Measuring Range: -50 to 950 Degrees Celsius This infrared thermometer is used for measuring the temperature of the object's surface, which is applicable for various hot, hazardous or hard-toreach objects without contact safely and quickly. Parameters 1. Temperature range: -50 to 950 Degrees Celsius (-58-1742 Degrees Fahrenheit) 2. Accuracy: less than 0 Degrees Celsius(32 Fahrenheit) : +-3 Degrees Celsius(+-5 Fahrenheit), more than 0 Degrees Celsius(32 Fahrenheit) : +-1.5 Degrees Celsius(+-2.7 Fahrenheit) or+-1.5%, whichever is greater 3. Repeatability: 1% rdg or 1 Degrees Celsius Whichever is greater 4. Response time: 0.5s, 95% Response 5. Emissivity: 0.10~1.00 Adjustable(preset as 0.95) 6. D:S: 12:1 7. Response wavelength: 5um~14um 8. No operation shutdown: About 7 seconds 9. Batteries: 1.5V AAAbattery x 2(not included) 10. Low power indicator: Low power indicator for power below 2.5V 11. Overload indicator: “Hi”“Lo” displayed on LCD 12. Exceed upperlower limits of work environment: “AH”“AL”displayed on LCD 13. Working environment temperature: 0~40 Degrees Celsius(32~104Fahrenheit) 14. Storage temperature: -10~60 Degrees Celsius(14~140Fahrenheit)