12
No.
Button/Indicator
Light
Description
1
Device status
indicators
To indicate the status of power supply, main power fault, backup
power fault, earth fault, CPU fault, network fault, open circuit and
short circuit of contact inputs.
2
Indicators of
power amplifier
status
To indicate fault of the connected power amplifiers.
3
Indicators of
speaker lines
To indicate the work status and fault status of 8 zones.
Rear Panel
No.
Parts/Ports
Description
1
Audio output of CH1
To output the signal of channel 1, can be connected to external
power amplifier or third-party devices.
2
Audio output of CH2
To output the signal of channel 2, can be connected to external
power amplifier or third-party devices.
3
Line in
Audio input interface, which is used to connect to external audio
devices, such as CD/DVD player, tuner, etc.
4
Contact outputs
8 dry contact output interfaces which can be used to control the
external devices.
5
Contact inputs
8 contact input interfaces which can be connected to third party
devices and used for business or voice alarm purpose.
Debug interface is used to upgrade the firmware.
6
Power amplifier
interface
To connect to the external power amplifiers of two audio
channels, transmit the audio signal, self-test signal to power
amplifier, and receive the fault status from power amplifier.
7
Spare amplifier
interface
To connect to a spare amplifier, transmit the audio signal, self-
test signal to power amplifier, and receive the fault status from
power amplifier.
8
Address DIP switch
To set the device address for communication, the range is from
1~15.
9
Mode switch
To set the work mode.
10
Calibration key
It is reserved and unavailable.
11
System extension
interface
To connect the RK-MCU or the other zone expander.
12
Loudspeaker interface
Speaker line interfaces of 8 zones, each zone has two speaker
lines (A&B).
13
External amplifier
interface
Including the CH1A IN, CH1B IN, CH2A IN and CH2B IN.
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