The Belimo AFB24-MFT-S Proportional Control S/R Actuator 180 in-lb Auxiliary Switch 24V is a high-performance actuator designed for precise control of dampers and valves in HVAC systems. Operating on a 24V power supply, it provides proportional modulation for accurate airflow and temperature regulation. https://www.partshnc.com/180inlb-24v-sr-prop-auxsw-3