Humidity sensors are devices that measure the amount of moisture in the air. They work by detecting changes in electrical resistance or capacitance caused by humidity levels. These sensors are commonly used in various applications, including weather stations, HVAC systems, and industrial processes, to ensure optimal conditions. There are different types of humidity sensors, such as capacitive, resistive, and thermal. Each type has its own method of measurement and is suited for specific environments. Accurate humidity readings are essential for maintaining comfort, preserving materials, and ensuring the efficiency of equipment.