Wall Mount Smart Sensor Portable Automatic Body Temperature Detector Infrared Forehead Palm Thermometer measures a person’s body temperature in as little as one second. A reading is taken as soon as an individual’s forehead is detected within 2-4 inches of the thermometer’s sensor. A green light will indicate that their temperature is within a normal range, and a flashing red light and an audible alarm will indicate that the person has a high temperature. Don't hesitate. Order it now at Enliven+ online store at a very low cost.