This infrared contactless thermometer has many features including a stable and reliable Taiwan high precision infrared sensor, Good performance of environment temperature adaptability, Capability of being used in a complex environment, Patent probe design to ensure a more precise measurement, Capacity of storing 32 sets of measurements, Measuring unit: Optional for Celsius (?) / Fahrenheit (?), Automatic power-off and power-saving functions, Large size LCD screen, high definition tricolor backlight (green for normal temperature, yellow for alert temperature, red for fever temperature), display clear and soft. Effective distance : 1cm?15cm.