Siemens Building Technology 331-2906 Actuator R-407A Is this switch a manual

Is this switch a manual or automatic reset

and a thickness of approximately 0

What is the primary cause of failure for this part

this kit facilitates precise actuator to valve conversion for valve sizes ranging from 2-1/4" to 4"

Siemens Building Technology 331-2906 Actuator R-407A Is this switch a manualThe Siemens Building Technology 331 2906 Actuator is a heavy duty, No. 4 pneumatic damper actuator engineered for precise control in commercial HVAC systems. This piston type actuator features a 5 to 10 psi nominal spring range and a robust 4 inch stroke, making it a reliable solution for modulating or two position control of outdoor air, return air, and exhaust dampers. Designed with a pivot mount configuration, it reduces binding and mechanical