A visual indicator that displays several zones or buildings in which an alarm signal has originated from is called a(n):
A. Zone alarm panel
B. Contact alarm panel
C. Break alarm panel
D. Annunciator
E. Trouble signal
A visual indicator that displays several zones or buildings in which an alarm signal has originated from is called a(n):
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A visual indicator that displays several zones or buildings in which an alarm signal has originated from is called a(n):
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