Siemens Building Technology GVD121.1U 2-Position Fire & Smoke Damper Actuator S/R 200 lb-in 24 VAC

The Siemens Building Technology GVD121.1U Fire & Smoke Damper Actuator is used for controlling airflow and safety as it will close the dampers during fire or smoke events. Intended for HVAC systems, it increases building security. It used a 2-position control signal to either open or close the damper depending on the fire safety needs. The spring return mechanism provides 200 lb-in of torque to return the damper to its initial position in the event of power failure. Suitable for fire and smoke damper applications in ventilation systems, it has a 24 VAC power supply for effective action.