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Rear Panel
No.
Parts/Ports
1
MIC volume
2
Line volume
3
Loudspeaker volume
4
Line input
5
Debug interface
6
Address
7
Up link
8
Down link
9
Power adapter interface
Technical Specifications
Parameters
Power supply
Power consumption
Microphone
Sensitivity
SNR
Optimal pickup distance
Line Input
Input signal
Input impedance
Frequency response
SNR
THD
Others
Built-in loudspeaker
Working Conditions
Description
To adjust the volume of the microphone.
To adjust the volume of the line input.
To adjust the volume of the loudspeaker.
This port can be connected to an external audio device, such as
a CD/DVD player, tuner, etc.
To upgrade the firmware.
The DIP switch is used to set the address of remote call
stations for communication, which ranges from 1 to 6. This
device has a built-in 120 resistor for the CAN bus, the 4th
switch is to set the end resistor. Only the end device on the bus
can be set to connect to the end resistor.
To connect to the RK-MCU or previous remote call station.
To connect to the next remote call station.
It is used to supply the power by connecting to an external
power adapter in case the device can't be powered by RK-
MCU.
Values
24V DC
10 W
-50dB± 3dB
60dB, A-weighted
10～20cm
1V(0dBV)
10 KΩ
80Hz-18kHz, ±3dB
>85dB, A-weighted
<0.1%
2W/8Ω
18
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