What mode allows an elevator to be operated in-car with a key?

The option indicating that the elevator can be operated in-car with a key refers to Phase 2. This is an essential feature in certain fire situations, allowing firefighters to take control of the elevator directly from the car to ensure it can be used safely and effectively, even if there’s a smoke condition or other hazards present in the building.

In Phase 2, the firefighter can bypass the automatic controls and operate the elevator manually. This is crucial for safely transporting personnel and equipment during rescue operations or when navigating through smoke-filled areas. It enhances the safety and usability of elevators during emergencies, enabling strategic access to different floors while maintaining control over the car's operation.

The other options do not provide the same level of operational control needed in such emergency situations. Normal Use Mode and Service Mode pertain to standard operations under non-emergency conditions and do not specifically allow for in-car operation with a key by firefighters. Phase 1 does involve some emergency control elements but typically simply recalls the elevator to a designated floor without the advanced manual operation capabilities that Phase 2 provides.