<p>Fast Testing - The infrared thermometer accurately measures body temperature in less than one second. A reading is taken as soon as an individual forehead is detected by the temperature sensor within a 2- to 4-inch radius. A green light indicates that your temperature is within the normal range, and a flashing red light and audible alarm indicate that the person has an elevated temperature. <p>Accurate Results - Every measurement is accurate to within 18°C (or 0.1°C) with one-touch operation. The wall and body thermometer is designed for testing by people of all ages, including children. A clear digital LED display reads the temperatures to the user. These wall thermometers are perfect for multi-employee businesses, supermarkets, bars, restaurants, and other types of businesses, large or small. <p>Clean and Safe - Medical professionals prioritize minimal contact to prevent the transmission of bacteria and viruses. This design is ideal for quickly, safely, and accurately measuring multiple temperatures. <p>The latest technology – you can rely on outdated technologies. Mercury thermometers are not as hygienic and take too long to provide accurate results. Digital thermometers are safer but still have the same risks and require close contact and oral sharing. For a quick reading in a crowded situation, infrared wall thermometers offer the safest option. <p>This product requires 4 AA batteries, not included. <p>When the temperature is above 37.5°C, "Hr" will appear on the K3 infrared thermometer's display and a "didi" buzzer will prompt you to check your personal health in time. <p>Quantity supplied: 1 piece