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ASTTBC RFPT — Fire Alarm Systems (AL) · Question

According to CAN/ULC-S524, what is the required colour for a visual indicator meant to denote a 'System Trouble' condition?

CAN/ULC-S524 requires visual indicators for 'Power On' (Green) and 'System Trouble' (Amber/Yellow). Red is reserved for Alarm.

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Question: According to CAN/ULC-S524, what is the required colour for a visual indicator meant to denote a 'System Trouble' condition?

Answer options:

  • Red
  • Blue ✅ Amber or Yellow
  • White

Correct answer: Amber or Yellow

Explanation: CAN/ULC-S524 requires visual indicators for 'Power On' (Green) and 'System Trouble' (Amber/Yellow). Red is reserved for Alarm.

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