Infrared sensors are electronic sensors that can detect infrared radiation (heat radiation). They are often used to detect movement, measure temperatures, or measure distance.

There are several types of infrared sensors, depending on their specific applications. Some examples of infrared sensors are:

PIR sensors (passive infrared sensors): These sensors detect movement by detecting the heat radiation emitted by human or animal bodies. They are often used in security systems, lighting applications, and thermostats.

IR distance sensors: These sensors measure the distance to an object by emitting infrared radiation and measuring the time it takes for the light to bounce back. They are often used in autonomous vehicles, robots, and other applications where the distance to an object needs to be measured.

IR temperature sensors: These sensors measure the temperature of an object by detecting the infrared radiation emitted by the object. They are often used in applications where the temperature of an object needs to be measured, such as in industrial processes or meteorology.

IR fluid level sensors: These sensors detect the level of a fluid in a tank by using infrared radiation. They are often used in applications where the level of a fluid needs to be measured, such as in fuel systems or water treatment plants.