Thermal imaging cameras are devices that detect radiation in the infrared range of the electromagnetic spectrum. They can detect temperatures from -20°C to +450°C without contact with the object being measured. Thermal imaging cameras contain an infrared detector, a lens, and a display, which can be used to monitor the thermal signature of objects, machinery or other sources of heat. It is commonly used in surveillance, research and development, and industrial applications. It provides an accurate, reliable temperature reading of any surface, enabling easy detection of potential areas of concern or interest.