What typically serves as a guideline on the non-emergency signals provided by fire alarm systems?

The correct choice highlights that the guidelines on non-emergency signals provided by fire alarm systems often derive from established annex guidelines. These annex guidelines provide specific criteria and recommendations for the operation and functionality of fire alarm systems, particularly in areas that extend beyond mere life safety, such as signaling for other conditions or situations that do not pose an immediate danger to life.

Annex guidelines typically include detailed descriptions of different types of signals, how they should be integrated with alarm systems, and best practices for usage. This context helps in ensuring that the systems are compliant with the latest codes and standards, as well as promoting reliable operation.

While national electrical codes, manufacturer's instructions, and federal regulations are essential for ensuring electrical safety and compliance, they may not specifically address the nuances associated with non-emergency signaling functionalities as comprehensively as annex guidelines do.