👉 Infrareds, also known as thermal infrared radiation or IR radiation, are a type of electromagnetic radiation that is emitted by many types of matter at temperatures above about 200°C. These include most solids, liquids, and gases, as well as some biological organisms. IR radiation is characterized by its frequency range from approximately 5 to 10 micrometers (microns) in wavelength and has a high energy content due to its low temperature. It is often referred to as the