FEATURES High-Precision Infrared Sensor is Adopted, with Stable & Reliable Performance Strong Environmental Temperature Adaptability, and can still be used normally in Complex Environment Probe Structure Ensures More Accurate Measurement Automatically Save the Last Measured Value Large LCD Screen with High Brightness Backlight, Clear and Soft Display Automatic Shutdown to save Battery Different color combination for easy recognition 0 0 34.0 C - 37.3 C : Green Color 0 0 37.4 C - 38.0 C : Yellow Color 0 0 38.1 C - 42.9 C : Red Color Authentication