The Forehead and Surface Infrared Thermometer from SantaMedical is specially designed to obtain the most accurate temperature readings of tear ducts or the forehead. The temperature on the forehead reads from 1” to 4”. The temperature is displayed on the LCD screen and it has a backlight for enabling the night time usage and it can even display results in total darkness. The thermometer features the audio alarm for alerting whenever the person is suffering from the high temperature. You can find this Forehead and Surface Infrared Thermometer in the most reasonable prices and the best quality.