What type of Auxiliary Fire Alarm System is connected directly to the Public Communications System?

The correct choice is the shunt type auxiliary fire alarm system because it is specifically designed to connect directly to the Public Communications System (PCS). This system allows for an immediate notification to emergency services when a fire alarm is activated, facilitating a prompt response.

The shunt type system functions by allowing the fire alarm signal to bypass or "shunt" to the public communication system, ensuring that vital information is transmitted quickly and efficiently. With this direct connection, it enables a more streamlined communication process during emergencies.

While manual type systems rely on human activation to alert the fire department, and conventional type systems typically communicate information without directly linking to the PCS, they do not provide the same level of immediate connectivity and response. The waterflow type is concerned mainly with detecting water flow in sprinkler systems rather than linking to public alerts. This makes the shunt type system the most appropriate answer for ensuring direct integration with public emergency communication.