Which type of fire alarm system is designed to identify the area where an alarm originated?

The correct answer is the coded system, which is specifically designed to indicate the area where an alarm has originated. In a coded fire alarm system, different zones or areas of a building are assigned unique codes. When an alarm is triggered, the system provides a corresponding code that identifies the specific location of the activation, allowing fire safety personnel to quickly respond to the right area.

This capability is crucial for effective fire response, as it minimizes confusion and reduces response time. Firefighters and emergency personnel can efficiently navigate to the source of the alarm, enhancing overall safety and effectiveness during an emergency response.

Other options may refer to various aspects or configurations of fire alarm systems, but they do not possess the specific feature of identifying the area of origin as effectively as a coded system does. For example, an auxiliary system is often connected to a central station but does not inherently detail the location of the alarm event. Similarly, alarm matrices and line detectors serve different functions in monitoring fire conditions without pinpointing the exact area of origin as directly as a coded system does.