What does a trouble signal typically indicate in an alarm system?

A trouble signal in an alarm system serves as an important indicator of a malfunction or that maintenance is required. It alerts the system owner or operator that there is an issue that needs attention, which may involve components like sensors, wiring, or communication signals that are not functioning as intended. This can encompass a variety of problems ranging from low battery levels to wiring issues or faults in the sensing devices.

Understanding the nature of a trouble signal is crucial for ensuring that the fire alarm system remains operational and capable of detecting actual fire events when they occur. By addressing the issues indicated by the trouble signal, the integrity of the alarm system can be maintained, thereby ensuring safety.

Alternative options signify different statuses of the system. A system activation would indicate that the alarm is responding to a fire condition, while normal operation would mean there are no issues present. A battery replacement required signal would specifically denote a need to change the system’s batteries. Consequently, "malfunction or maintenance needed" accurately captures the essence of what a trouble signal indicates within the context of fire alarm systems.