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Installation and Connections
22
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)
Alarm Output Port
• Three ways to relay 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 (Resistance
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