Which of the following components is part of a water-based fire protection system?

A Fire Department Connection is a vital component of a water-based fire protection system. It is designed to allow firefighters to connect their hoses to an existing water supply when responding to a fire. This connection ensures that fire protection systems, such as fire sprinkler systems or standpipes, can receive additional water flow from an external source, which is especially crucial when the internal supplies might be insufficient to combat extensive fires.

Fire Department Connections are strategically located around buildings to provide quick access for emergency responders. Their presence is mandated by various fire codes and regulations to enhance a property's firefighting capabilities. In essence, they are integral to the effectiveness of water-based fire protection systems and play a crucial role in enhancing fire safety.

The other components listed do not directly contribute to fire protection systems in the same way. An Electric Meter is related to electrical supply management, a Water Main Pressure Meter is typically associated with monitoring public water supply pressure but does not form part of fire protection installations, and Smoke Detectors are fire alarm system components that detect smoke rather than being part of a water supply system. Therefore, understanding the role of a Fire Department Connection is essential for comprehending the overall framework of fire protection systems.