Which component of the control console indicates that cylinder pressure is at 51% and greater?

The green solid light on the control console indicates that the cylinder pressure is at 51% or greater. This is an important feature of the Scott Air-Pak X3 SCBA, as it provides firefighters with a clear visual indicator that they have an adequate air supply to safely perform their tasks.

Having a pressure level above 51% ensures that the wearer is in a safe range for air consumption, allowing for effective operation during emergencies. The green solid light serves as a reassurance that enough air is available, which is crucial in high-stakes environments where maintaining adequate breathing capacity is vital for safety and performance.