Fangrui Product Details Features: 1.0.5 Seconds Non-contact Fast Response, Fast, Efficient And Safe 2. Equipped With High-precision Sensors To Make Temperature Measurement More Stable And Reliable 3. Cold And Hot Spots Can Be Easily Solved: Air Conditioning Vents, Electronic Repairs, Temperature Difference Tests, Scan The Object To Be Measured, Find The Cold And Hot Spots According To The High And Low Temperatures To Find The Problem 4. High-quality Buttons: Made Of High-quality Material, Comfortable To Touch And Not Fall Off After Long-term Use. High-definition Color Screen Backlight Display: No Fear Of External Changes, Easy To Read Measurement Data Parameters: Measuring Range: -50390-26716 Measurement Accuracy: Or 2 Measurement Distance Ratio: 12:1 Emissivity: 0.95 Preset Resolution: 0.10.1 Response And Response Time: (8-14)um500ms Repeatability: Or 1unit Conversion: Data Lock Function: Laser Positioning Function: Backlight Display Function: Automatic Shutdown Function: