What does the term "humidistat" refer to?

The term "humidistat" refers specifically to a device used to control humidity levels in a space. This device is designed to monitor the moisture content in the air and can activate or deactivate humidifying or dehumidifying systems as needed to maintain the desired humidity level. Humidistats are essential in various environments where humidity control is vital for comfort, health, or equipment functionality, such as in HVAC systems, greenhouses, and storage facilities for sensitive materials.

In contrast, a device for measuring temperature is typically known as a thermometer, which focuses solely on temperature readings and does not measure humidity. A device for increasing air pressure pertains to fans or blowers, which primarily influence airflow rather than moisture content. Lastly, a device for filtering air pollutants refers to air purifiers or filters, which remove particulates and contaminants from the air but do not control humidity levels.