EverFocus EDR920 - Manual (Page 75)

APPENDIX B : RS-485 (RJ45) specifications
APPENDIX
There are two RS-485 (RJ-45) connectors of one port on the back panel of the DVR. Please refer to
the following pin assignment for application.
1 2 3 4 5 6 7 8
PIN # NAME
1
2
3
5
4
6
7
8
GND
NC
NC
NC
NC
NC
RX
TX
74