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A short tone sounds from the selected intercom speaker and the
corresponding information appears on the screen.
Press the PTT key on the microphone and speak into it.
Release the PTT key to receive.
After finishing your conversation, press the same selected key from
IC 1 to IC 6 to return to the siren mode.
Press and hold any key from IC 1 to IC 6 on the front panel for two
seconds.
All keys from IC 1 to IC 6 light red and a short one sounds from all
the intercom speakers.
Press the PTT key on the microphone and speak into it.
Release the PTT key to receive.
Press the MENU key on the front panel.
Press the Up or Down key to select "KEY BEEP" and press the ENT
key.
Press the Up or Down key to select "ON" or "OFF" and press the
ENT key.
ON: You hear the beep when pressing the key on the front panel.
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