Infrared sensors are devices that detect and measure infrared radiation emitted from objects. This type of sensor is commonly used in a variety of applications, including night vision cameras, home security systems, temperature measurement, gas detection, and automotive sensing. Infrared sensors work by detecting the heat emitted by an object and converting it into an electrical signal, which can then be used for various purposes. These sensors are sensitive to changes in temperature and can detect objects even in low light or complete darkness. Overall, infrared sensors play a crucial role in many modern technologies and continue to be developed and improved for a wide range of applications.