What is a switch quantity air actuator

Open/close, 3-point, damper actuator is a device used to control the opening and closing of a damper. It receives an external control signal which is a switch signal, typically with only two states: "on" and "off," much like a light switch. When it receives an "on" signal the actuator drives the damper to open, allowing air to pass through the duct; when it receives an "off" signal, it drives the damper to, blocking the airflow. It is widely used in ventilation systems, air conditioning systems, and other environmental control fields. For example, in the central air conditioning system of office building, switch-type damper actuators are used to control the dampers in various ventilation ducts, thereby regulating the air distribution in different areas