ALFA NETWORK AIPC933D - Manual (Page 65)

Network Camera User’s Guide
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Appendix A: Alarm I/O Connector
Some features of the Camera 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
12VDC Brown/White DC 12V (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.