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Use the same ground with that of DVR if you use external power for the
alarm device.
Note Only indoor devices are recommended for being connected
to HD-DVR-1004 / HD-DVR-1008 /HD-DVR-1016 alarm
inputs.
Figure 3-2 Sample of Alarm Input (Normal Close Type)
• Three ways to r elay alarm output (NO contact). External power supply
is needed for external alarm device.
• To avoid overloading, please read the following relay parameters sheet
carefully.
Relay Specification:
Model JRC-27F
Material of the touch Silver
Rating (Resistanc e
Load)
Rated switch capacity 30VDC 2A, 125VAC 1A
Maximum switch power 125VA 160W
Maximum switch voltage 250VAC, 220VDC
Maximum switch currency 1A
Insulation Between touches with same polarity 1000VAC 1minute