Which signal is typically used to indicate a supervisory condition of a device in the fire alarm system?

Which signal is typically used to indicate a supervisory condition of a device in the fire alarm system?

• A. Alarm
• B. Supervisory
• C. Trouble
• D. Silence

Answer: (B)

In fire alarm systems, different signals tell you exactly what kind of condition is present. A supervisory signal is used when a monitored device or function must be kept under observation and remains in its required state, but there isn’t an active fire or fault. It flags that the protection device (such as a valve position, a hold-open device, or another monitored component) needs ongoing oversight to ensure it stays in the correct configuration. This is distinct from an alarm, which indicates active fire or smoke; a trouble signal, which shows a fault or outage in the system; and silence, which just mutes audible alerts while the event is still present. So the signal used to indicate this supervisory condition is the supervisory signal.

In fire alarm systems, different signals tell you exactly what kind of condition is present. A supervisory signal is used when a monitored device or function must be kept under observation and remains in its required state, but there isn’t an active fire or fault. It flags that the protection device (such as a valve position, a hold-open device, or another monitored component) needs ongoing oversight to ensure it stays in the correct configuration. This is distinct from an alarm, which indicates active fire or smoke; a trouble signal, which shows a fault or outage in the system; and silence, which just mutes audible alerts while the event is still present. So the signal used to indicate this supervisory condition is the supervisory signal.