How is elevator control gained after completing Phase I?

Elevator control after completing Phase I is gained by turning the key to Phase II. In this context, Phase I typically involves the fire service gaining control of the elevator system for safety reasons, usually by activating a key switch located at the elevator panel or fire command center. Once activated, it ensures the elevator is no longer responding to regular calls and is under the control of firefighters.

By switching to Phase II, the firefighters can manually operate the elevator, allowing for precise control in emergency situations. This phase enables them to send the elevator to specific floors and open the doors as needed, ensuring safe and efficient access while addressing fire conditions. The other options do not facilitate elevator control directly after Phase I; for instance, pressing the 'Open Door' button is not adequate for overriding the elevator system set in motion with Phase I restrictions.