Appendix A: Alarm I/O Connector
Some features of the Video Server can be activated by the external sensor that senses physical
changes in the area Camera is monitoring. These changes can include intrusion detection or
certain physical change in the monitored area. For examples, the external sensor can be a door
switch or an infrared motion detector. These devices are customer provided, and are available
from dealers who carry surveillance and security products. Electrically, they must be able to
provide a momentary contact closure.
This Camera provides wires for general I/O terminal and RS485 interface as below:
Cable for I/O connectors:
Name
Cable Color
Function
5VDC Brown/White DC
5V (50mA maximum)
GND
Blue/White
GND
D+
Purple/White
RS485 data +
D-
Gray
RS485 data -
DI Green/White
Digital
signal
input
DO
Orange/White
Digital signal output
User can refer to the schematic below to make a proper connection between I/O connector and
external sensor and output device.
Explanation of External I/O Circuit Diagram:
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