The zone that the microphone signal will be sent to is selected by pressing the corresponding front panel switch.
Each PA66 zone output has a contact closure terminal set that shorts together when the corresponding front panel switch is pressed. This feature is designed for paging amplifiers
with relay switches inside that mute background music while paging.
The PA66 can be powered by any source of 9 to 20 VDC or VAC, with at least 20mA of current available.
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