The infrared temperature sensor reads body temperature within 1.9 inches of the center of the forehead without physical contact. The intuitive single-button control design thermometer reads the temperature in just 1 second from a clear bright extra-large LED screen, even in total darkness. The body thermometer is designed for all ages, ranging from babies and toddlers to the elderly. An ideal choice for hospitals, hotels, school settings, and public establishments. Measuring distance: 3 - 5cm. Measuring range: human body: 32 - 42.5 C ( 89.6 - 108.5 F) , object: 0-100C(32 - 312F). Measurement accuracy: human body 0.2 C ,object 1 C. Memory reserve: 32 sets.Backlight: High brightness backlight. Modes: body mode, surface mode. Auto shutdown time: 15s.