Damper actuators are devices that are used to control the opening and closing of dampers, which are used to regulate the flow of air or gas in HVAC (heating, ventilation, and air conditioning) systems. They can be electric, pneumatic or hydraulic, and they work by operating the damper blades to allow or restrict the airflow as per the desired signals. They are designed to provide accurate positioning and are equipped with feedback systems that allow for remote monitoring and control. Damper actuators are essential components in the successful functioning of HVAC systems and can be used in a variety of settings, including industrial, commercial, and residential applications.