IR (infrared) thermometer 

An IR (infrared) thermometer is a non-contact device used to measure temperature by detecting the infrared radiation emitted by an object or surface. Unlike traditional thermometers that require direct contact, IR thermometers allow users to take readings from a distance, making them especially useful for situations where contact is unsafe, impractical, or unhygienic. They are widely used in industries, medical settings, cooking, and HVAC systems.

IR thermometers work by focusing infrared energy onto a detector called a thermopile, which absorbs the radiation and converts it into an electrical signal. This signal is then processed and displayed as a temperature reading. The accuracy of the measurement can be influenced by factors such as distance, surface emissivity, and environmental conditions. Many modern IR thermometers feature laser pointers for targeting, digital displays, and adjustable settings for different surface types.

In medical applications, IR thermometers are commonly used for quick and hygienic fever screening, especially during health crises like the COVID-19 pandemic. In industrial environments, they help monitor equipment temperatures to prevent overheating and ensure safety. Their convenience, speed, and ability to measure temperature without physical contact make them an essential tool across a wide range of fields.