Fangrui Product Details Features: This Digital Thermometer Has An In-built Sensor That Gives You The Precision To Hone In On The Exact Space You Want To Measure. Non-contact Industry Thermometer With 12 Points Temperature Test Area Indicate. Temperature Difference Alert,easy To Set Maximum/minimum Temperature. Four Types Are Available: Ir01a Range Of Temperature Is -50~380degree,ir01b Range Of Temperature Is -50~550 Degree,ir01c Range Of Temperature Is -50~550 Degree With Ambient Temperature&humidity, Ir01d Range Of Temperature Is -50~800 Degree With Ambient Temperature&humidity. Reflectivity Adjustable: Widely Used With Adjust Range:0.10-1.00. This Thermometer Is Lightweight And Portable. It Will Perfectly Fit Your Pocket And Backpack. So, You Can Take It Anywhere And Use It Anytime. Lcd Display: Digital Lcd Display With Backlight For Easy Reading. Specifications: Name: Ir01a Industrial Infrared Thermometer Color: Black Type: Ir01a,ir01b,ir01c,ir01d(optional) Material: Abs Plastic Measuring Range: Ir01a: -50~380 Degree Ir01b: -50~550 Degree Ir01c: -50~550 Degree With Hygrometer Ir01d: -50~800 Degree With Hygrometer Ambient Temperature: -10-60℃ir01c Ambient Humidity: 0-100 Laser: 1mw/630-670nm Level 2 Response Spectrum: 8-14μm Response Time: 0.5s Emissivity: 0.10-1.00 Adjustable D:s: 12:1 Operating Temperature: 0~40°c Storage Temperature: -10~60°c Automatic Shutdown: 30 Seconds Power Supply: 2 * 1.5v Aaa Batteries(not Included) Package Size: 193*121*51mm Package Weight: 217g Package List: 1 * Thermometer 1 * User Manual