This digital non-contact infrared thermometer is a reliable industrial temperature measuring gun used to measure the surface temperature of an object safely and quickly in less than a second. Can be widely used in oil and chemical industry, railway, electricity, textile processing, etc. Please note before buying Note: only for industry, not Suitable for human body temperature measuring Product Features 1.Digital color LCD display with backlight, convenient to read at night. 2.Safely measure surface temperature of hot, hazardous or hard-to-reach objects without contact. 3.Wide Measuring Range, high performance and high accuracy. 4.Includes data locking, switchable laser positioning & auto power off function. 5.Switchable temperature units: Celsius(C) and Fahrenheit(F). 6.Low battery indication and laser indication functions. 7.Widely used for measuring the temperature of the object's surface. Technical Details Measuring Range(AE320 ST390+) -50 C to 390C / -58F-734F Measuring Range(ST490+) -50 C to 490C / -58F-914F ST390+ / ST490+ Accuracy -50C(-58F) to 0 C(32F)3C 0C(32F) to 100C(212F)2 100C here in before2C or 2% whichever is greater High Low Temp. Alarm only for ST490+ Emissivity(pre-set 0.95) 0.10~1.00 adjustableonly for ST490+ Distance to spot size 12:1 Spectral response 8-14 um & 500mSec Repeatability 1%of reading or 0.1C Celsius/Fahrenheit unit switch Yes Laser Ponits 13 Points Ambient operating range 0 to 40C (32F to 104F) Relative humidity 10-95% RH noncondensing Storage temperature -20 to 60C (-4Fto 140F) Data Hold function Yes Laser pointer hot spot location Yes Auto power off function Yes Power 1.5V AAA Alkaline (not include) Packing Contents 1pc Infrared thermometer 1pc user manual 1pc Gift box Product Photos AE320 Color LCD Display without Alarm Product Photos ST390+ Color LCD Display without Alarm Product Photos ST490+ Color LCD Display with Alarm