When the alarm condition is met, what happens on the control panel?

• A. System shuts down
• B. Audible alarm sounds only
• C. A warning light blinks but no illumination
• D. Indicators illuminate

Answer: (D)

When an alarm condition is met, the control panel provides a clear, immediate cue by turning on the indicator lights. Those illuminated indicators show that something is wrong and often point to the specific system or area affected, so the operator can quickly assess and respond. While audible alarms may also accompany the visual signals, the essential panel feedback is the illumination of the indicators. The other scenarios aren’t the standard panel response: automatic shutdown isn’t guaranteed for every alarm, an audible alert without visual indication is less effective for quick localization, and a blinking light without illumination contradicts the idea of a active warning signal. Hence, the indicators illuminate.