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Definitions Edit

An annunciator is "[a]n audible or visible indicator of an alarm."[1]

An annunciator is

[a] visual or audible signaling device (monitor) that indicates the condition of associated circuits. Usually, this is accomplished by activation of a graphics display and audible sound.[2]

References Edit

  1. NIST, FIPS 31.
  2. DOE Manual 470.4-7, at 6.

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