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Chapter III Operation Instruction
3.1 Functional keys and indicators
Fig. 3.1 Keys and indicators on the panel
3.2 Emergency broadcast function
Emergency broadcast includes the following statuses:
1) Emergency broadcast play status: The "EMER START (Emergency Start)" indicator is always on,
and the system plays the emergency broadcast.
2) Emergency broadcast pause state: The "EMER START (Emergency Start)" indicator flashes and
the system waits for the play command.
3) Emergency broadcast stop state: The "EMER START (Emergency Start)" indicator lamp is
normally off and the system exits to the standby state.
The emergency broadcast is applicable to fire alarm. When the emergency broadcast is triggered,
if a user-preset emergency broadcast recording is present in the machine, the recording will be
broadcast; otherwise, the ex-factory default emergency broadcast recording is automatically
broadcast, and the volume of power amplifier is automatically set to the maximum state and
cannot be changed.
There are two ways to enter the emergency broadcast state:
1) Upon receipt of the "Fire alarm" signal sent by the external control panel, the product will
automatically enter emergency broadcast state.