3.3 Back Panel
(4 CH DVR)
（8CH DVR）
1. Video Input Connectors (1-4)
4 channel video input, BNC (1Vp-p, 75Ω)
2. Video Output Connector
Video output to display monitor, BNC (1Vp-p, 75Ω)
3. Audio Input / Output Connector
1 channel audio input / output, RCA (2Vp-p, 600Ω)
4. Alarm Input Connectors (ALARM IN 1-4, 5-6 Ground)
For connecting to external sensor device
Alarm Output Connectors (ALARM OUT 7-8)
For connecting to external alarm device
RS-422 / RS-485 Connector (9-12)
For connecting PTZ camera control
5. Ethernet Connector
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