Audible and visual alarm indicators shall have a minimum size of which of the following?

Audible and visual alarm indicators shall have a minimum size of which of the following?

• A. DN20 size
• B. DN15 size
• C. DN25 size
• D. DN32 size

Answer: (A)

The test is checking the minimum size needed so audible and visual alarms are easily noticed in a busy clinical setting. The required minimum is twenty millimeters in diameter, which makes the alarm indicator readable from a practical distance and stands out against the surrounding equipment and lighting. Since the question asks for the minimum size, twenty millimeters meets the standard; smaller sizes would not satisfy it, while larger sizes would also comply but aren’t necessary to meet the minimum requirement.

The test is checking the minimum size needed so audible and visual alarms are easily noticed in a busy clinical setting. The required minimum is twenty millimeters in diameter, which makes the alarm indicator readable from a practical distance and stands out against the surrounding equipment and lighting. Since the question asks for the minimum size, twenty millimeters meets the standard; smaller sizes would not satisfy it, while larger sizes would also comply but aren’t necessary to meet the minimum requirement.