Dahua MCVR6204 - Page 19

Installation 8
IR
Remote signal light that receives infrared signal from remote control.
+12
+12V/1A output.
Ground
VO
AV video output
RX
RS-232 port sender and receiver that connects to RS-232 port.
TX
Voice talk port
Voice talk port Figure 2-6
Name
Function
+12
+12V output
Ground
Mic In that can connect to microphone.
Mic Out that can connect to earphone.
SPK+
Speak positive pole
SPK-
Speak negative pole
External pickup port
External pickup port Figure 2-7
Name
Function
+12
+12V output
Ground
Mic In that can connect to pickup.
Connects to earphone.