Haier forehead temperature gun and diving forehead temperature gun: diving forehead temperature gun accuracy. When the body temperature is too high, both Haier forehead temperature gun and diving forehead temperature gun will have fever reminders, and there are fever sound reminders and vibration reminders outside diving. When using the forehead temperature gun in Vietnam, when a person with a fever is detected, the forehead temperature gun will display red, and it will continue to make a sound of comparison, prompting the staff to have an abnormal situation and be humanized.