What color shall a fire alarm strobe light be?

What color shall a fire alarm strobe light be?

• A. Blue
• B. Green
• C. Red
• D. White

Answer: (D)

White strobe lights are used on fire alarm systems because the signaling device must be instantly recognizable and standardized across brands. Fire alarm codes and standards specify a white lens for visual alarms, ensuring maximum visibility and reducing confusion with other emergency signals. A white flash is easier to notice against varied interior lighting and backgrounds, helping people evacuate more quickly. Other colors—blue, green, or red—are generally tied to different systems (security, exit signage, or other indicators) and could cause mistaken interpretations during an incident. So the color of a fire alarm strobe light is white.

White strobe lights are used on fire alarm systems because the signaling device must be instantly recognizable and standardized across brands. Fire alarm codes and standards specify a white lens for visual alarms, ensuring maximum visibility and reducing confusion with other emergency signals. A white flash is easier to notice against varied interior lighting and backgrounds, helping people evacuate more quickly. Other colors—blue, green, or red—are generally tied to different systems (security, exit signage, or other indicators) and could cause mistaken interpretations during an incident. So the color of a fire alarm strobe light is white.