Humidity and temperature sensors are devices that measure the relative humidity and temperature of an environment. These sensors are used in a variety of applications, from monitoring indoor air quality to controlling climate-controlled warehouses. The relative humidity is a measure of the amount of water vapor in the air, and is expressed as a percentage. Temperature is measured in degrees Celsius or Fahrenheit. By combining the two measurements, these sensors can provide a comprehensive picture of the environment. Humidity and temperature sensors are often used in conjunction with other sensors, such as carbon dioxide sensors, to provide a more detailed picture of the environment. They are also used in industrial applications, such as controlling the temperature and humidity of a manufacturing process. By monitoring the environment, these sensors can help ensure the safety and efficiency of the process.