A smart duct damper is a device used to control the flow of air in a duct system. It is a motorized valve that is connected to a control system and can be adjusted to regulate the air flow. The damper is typically used in HVAC systems to control the temperature in a room or building. Smart duct dampers are designed to be more efficient than traditional dampers, as they can be programmed to adjust the airflow based on the temperature and humidity in the room. They can also be used to reduce energy costs by automatically adjusting the airflow when the temperature or humidity changes. Smart duct dampers are becoming increasingly popular as they provide a more efficient and cost-effective way to control the temperature in a room or building.