Non touch forehead IR thermometer is specially designed to take the body temperature of a person regardless of room temperature.
Depending on various skin types and thickness, there may be temperature difference
This thermometer measure infrared emission from the temporal artery, it is held just above the skin surface of the forehead and use a tracking light to indicate the measurement area. As this type of thermometer can be used to measure the temperature of a sleeping child, it is generally marketed for home use. This device does not come into contact with the patient, so the risk of cross infection is reduced. Further, the running costs of the thermometer are low because no disposable covers are required.