2 AAA batteries required.

Non-contact Measuring: Non-contact infrared technology reads from forehead with no physical contact, prevents cross-infection between multiple peoples. Safer and healthier, especially the forehead readings, as it does not bother the patient during crucial rest moments. Fast & Accurate:This thermometer equipped with the advanced infrared technology and high precision sensor reads fast, it only takes 1 seconds to read the temperature. The accuracy of temperature measurement is within 0.1 ℃ Multifunctional:The temporal thermometer is designed for all ages, adults, babies and elders. In addition to measuring forehead, it can also measure room, object, and liquids temperature. Great choice for families, nursery, hotels, school