Front view
4
1
2
3
5
6
7
1
Reset button
A brief press of the button will reset the device.
Holding the reset button pressed in for
approximately 10 seconds will reset the device
and restore the factory default settings when the
button is released.
2
RS-232/485 serial port
(DSub 9 pin male)
3
Green and red LEDs
For device status display
4
EXT.
USB interface solely for flash memory sticks
(not supplied)
5
Mic input Jack
(tip: Mic, ring: Power, End: Ground)
6
Line input RCA
7
Line output RCA
(Earphone out using RCA adapter)
Rear view
A 1 2 3 4 5 6
B 1 2 3 4 5 6
C
D 1 2
E
A Mic & Speaker
B Inputs & Relay
C RJ45 for LAN
10/100 Half/Full duplex
D Power
E Power
Pin Description
1 Microphone input
2 Mic Power (Bias)
3 Ground [G]
4 Ground [G]
5 S
6 Speaker -
Pin Description
1 Input 0
2 Input 1
3 Ground [G]
4 Relay closed [NC]
5 Relay common
6 Relay open [NO]
Pin Description
1 Not connected
2 Receive Data [RxD]
3 Transmit Data [TxD]
4 V+ 14.6V, 100mA max
5 Ground [GND]
6 RS-485 A
7 Ready to Send [RTS]
8 Clear to Send [CTS]
9 RS-485 B
Pin Description
1 Ground [G]
2 +9..30VDC/12..24VAC
Pin Description
ring Ground [G]
cent. +9..30VDC/12..24VAC
