Temperature control systems are devices or setups designed to maintain a specific temperature within a given environment. They are commonly used in various applications, including HVAC systems for heating and cooling buildings, refrigeration units for preserving food, and industrial processes that require precise temperature regulation. These systems typically consist of sensors, controllers, and actuators. The sensors measure the current temperature, while the controllers compare this reading to the desired temperature. If there is a difference, the actuators adjust heating or cooling elements to achieve the target temperature, ensuring comfort and efficiency in the environment.