Three-color Backlight Multi-function Digital Non-contact Infrared Forehead Body Thermometer Three color backlight (color alarm): When the body temperature is normal, the backlight is Green, Yellow backlight for slight fever and Red backlight for high fever. Fast and accurate:0.5 seconds measuring time and the accuracy is 0.2C(0.4F) Non contact: safe and clean, 5-15cm(2-5.9inch) measuring distance. Package Content:1 x Non-contact Infrared body Thermometer with Three-color Backlight;1 x User's Manual