A temperature sensor is a device that measures the temperature of an object or environment. It converts thermal energy into an electrical signal, which can be read and interpreted by other devices. Common types of temperature sensors include thermocouples, thermistors, and infrared sensors. These sensors are widely used in various applications, such as HVAC systems, industrial processes, and household appliances. Temperature sensors play a crucial role in maintaining safety and efficiency in many systems. For example, in automobiles, they help monitor engine temperature to prevent overheating. In smart homes, temperature sensors can adjust heating and cooling systems automatically, enhancing comfort and energy efficiency.