A temperature sensor is a device that measures the temperature of an object or environment. It converts temperature readings into electrical signals, which can then be displayed or recorded. Common types of temperature sensors include thermocouples, thermistors, and infrared sensors. These sensors are widely used in various applications, from household appliances like thermostats to industrial processes. Temperature sensors play a crucial role in maintaining safety and efficiency. For example, in HVAC systems, they help regulate indoor climate by adjusting heating and cooling based on the current temperature. In medical settings, temperature sensors are essential for monitoring patients' body temperatures, ensuring proper care and treatment.