In Phase 2 fire service operation, how are power-operated doors controlled?

In Phase 2 fire service operation, power-operated doors are controlled by requiring constant pressure on the door open push button. This method ensures that the doors remain open only while the operator is actively pressing the button, allowing for manual control and preventing accidental activation. This feature is particularly important during fire emergencies, as it allows personnel to make deliberate decisions about when and how to open doors, thus enhancing safety and control in potentially hazardous situations.

Other options involve automated or less direct means of control, which can pose risks such as unwanted door movement or failure to respond as intended in an emergency scenario. By using constant pressure, the system prioritizes human input and oversight, which aligns with the objectives of fire safety protocols.