What type of pull station requires the user to lift a cover or open a door before operating it?

The type of pull station that requires the user to lift a cover or open a door before operating it is known as a double-action pull station. This design is intended to reduce the likelihood of accidental activation. The requirement to lift a cover or open a door adds an additional step that ensures the person operating the station is doing so intentionally, which is particularly important in emergency situations where false alarms can lead to unnecessary panic or disruption.

In contrast, single-action pull stations can be activated with a simple pull or push, making them easier and quicker to use but also more susceptible to accidental activation. The other types mentioned—manual-action and emergency-action—do not specifically refer to the mechanism of requiring additional steps like lifting a cover or opening a door. Thus, the double-action pull station distinctly emphasizes intentional use, making it the correct choice in this scenario.