What does BLUE steady indicate?

What does BLUE steady indicate?

• A. Unacknowledged trouble
• B. Acknowledged trouble, communications failure, or test failure
• C. Alarm point secure
• D. Tamper

Answer: (B)

In alarm system status, colors are used to convey specific conditions quickly. A steady BLUE light signals a sustained condition that falls into one of three related categories: an acknowledged trouble, a communications failure, or a test failure. An acknowledged trouble means the alarm has been seen and acknowledged by an operator, but the issue itself hasn’t been resolved yet—the system is waiting for corrective action. A communications failure indicates the system cannot reliably communicate with a component or to the control station, signaling a potential issue with the data link or network. A test failure shows that a routine test did not pass, so maintenance or re-testing is needed. This color/state combination does not indicate an unacknowledged trouble, an alarm point being secure, or a tamper condition, which would be shown with different indicators.

In alarm system status, colors are used to convey specific conditions quickly. A steady BLUE light signals a sustained condition that falls into one of three related categories: an acknowledged trouble, a communications failure, or a test failure.

An acknowledged trouble means the alarm has been seen and acknowledged by an operator, but the issue itself hasn’t been resolved yet—the system is waiting for corrective action. A communications failure indicates the system cannot reliably communicate with a component or to the control station, signaling a potential issue with the data link or network. A test failure shows that a routine test did not pass, so maintenance or re-testing is needed.

This color/state combination does not indicate an unacknowledged trouble, an alarm point being secure, or a tamper condition, which would be shown with different indicators.