Siemens Building Technology GRD121.1U Actuator 320819-301 The high tensile cord is

The high tensile cord is specially treated to resist elongation and provide a high flex life under heavy torque loads

supporting up to 5 stages of heat and 2 stages of cool

The 10-604 series is the manufacturer's designation

providing a tight

The LH33CZ010 is the designated technical equivalent and direct replacement for the G775RGA-2

Siemens Building Technology GRD121.1U Actuator 320819-301 The high tensile cord isThe Siemens GRD121. 1U is a high torque 24V fire and smoke damper actuator engineered for precise 2 position control in critical life safety systems. As a veteran technician knows, reliability in smoke containment is non negotiable; this OpenAir electronic actuator delivers 30 lb in of torque to ensure positive closure against high velocity airflow. Operating on 24 VAC DC, the GRD121. 1U features a robust spring return fail safe mechanism that