The Siemens GMA121.1P Damper Actuator is a high-performance component designed to precisely control HVAC damper systems. Operating on a 24V power supply and utilizing a frequency of 50/60 Hz, this actuator provides a substantial torque of 62 lb-in, making it effective for managing a wide range of damper sizes and applications. The spring return (S/R) functionality ensures that the damper will return to its default position in the event of a power loss, enhancing system reliability and safety. 

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