EverFocus DVR EDR810M - Manual (Page 147)

Appendix B: Alarm Board Configuration
Alarm I/O pin assignment
The alarm connector, Figure 1, is used to provide one sensor alarm input for each camera input.
For easy operation, an alarm extension board, Figure 2, is provided to connect to the alarm
connector.
Each alarm input requires two wires, one wire connects to the desired alarm input pin, the second
wire connects to the ground. The alarm signal assignment is shown as below.
Appendix
B
<Figure 2>
PR16D00400 Alarm extension
board (HOST)
<Figure 1>
D-SUB 25 pin female connector
(DVR)