Temperature sensors are devices that measure the temperature of an object or environment. They can be found in many everyday items, such as thermostats in homes, refrigerators, and even smartphones. These sensors work by detecting changes in physical properties, like resistance or voltage, that vary with temperature. There are different types of temperature sensors, including thermocouples, thermistors, and infrared sensors. Each type has its own advantages and is used in various applications, from industrial processes to medical devices. By providing accurate temperature readings, these sensors help ensure safety and efficiency in many fields.