No-contact forehead thermometer, Infared technology, High accuracy with 3 sensors, Easy to use one-button controls. The Yuwell infared thermometer makes it quick and easy to take contactless temperature readings. Get results in one second, with just one push. The thermometer has an audible fever alarm, and is accurate and reliable. It also has a silent mode for testing children at night time, or when testing queues of people. Temperature measurements can be taken in farenheit or celcius.