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"485" (AB) External alarm
RS485, it can connect PTZ or decoder, and can Control PTZ via the panel, mouse, remote control and network.
port
Connected to USB Pen-drive or mouse and used for system software upgrade or video file backup.
USB
RJ-45 network port connected to network cable and used for remote browse or control.
NET
Power input is DC 12V/5A (16 Channel DVR). Power input is 12V/3A (4/8 channel DVR).
Power
Connected with alarm input and output.
8
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