Which type of alarm system is categorized by audible notification that can indicate the area of an alarm?

The correct answer is a coded system, as this type of alarm system utilizes audible signals that can convey specific information regarding the location or nature of the alarm. Coded systems provide a unique sound pattern, or tone, associated with different areas or types of emergencies, which allows individuals to quickly discern where the problem is occurring.

This feature of coded alarms is crucial in situations where rapid response is needed, as it helps responders focus on the area that requires immediate attention. The design of these systems enhances situational awareness for occupants and first responders alike, promoting effective emergency protocols.

The other types of systems mentioned do not primarily function in this manner. Auxiliary systems are typically used to enhance existing alarm systems, often for life safety purposes, but don’t generally provide the same level of detailed location-specific indications via audible notifications. Central station systems refer to alarm monitoring systems that notify an off-site central monitoring station but are not primarily designed for on-site audible notifications indicating areas of alarms. Beam detectors are a type of sensing technology used to detect smoke or fire by using a light beam, but they do not provide audible alerts themselves; their function is more about detection than indication.