Galleon VCSDVR-HDCVI4, User Manual

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for example, smoke detector.
When you select the external power supply, please share the GND with DVR;
Alarm input circuit:
Alarm inlet connection:
2.1.4 Alarm
output port
4 way switching
value alarm output,
selectable in normally open contact, also selectable in normally closed contact, the external alarm
device
should be
need Vcc;
Chapter Three Operation
3.
１
Operation instruction
3.1.1 Remote control AND Front panel keypad