DS-7200-ST Series DVR Quick Operation Guide
22
Peripheral Connections
Connecting to Alarm Input / Output Device
Note: The DS-7200HVI-ST/SE, DS-7200HFI-ST/SE, DS-7200HVI-ST/SN and DS-7200HFI-ST/SN models
provide no alarm in/out.
The alarm input/output interface of the DVR is shown below (taking DS-7204HVI-ST model as example):
The alarm input is an open/closed relay. If the input is not an open/closed relay, follow the connection diagram
below:
To connect to an AC/DC load, use the following diagram:
For DC load, JP4 can be used within the limit of 12V/1A safely. If the interface is connected to an AC load, JP4
should be left open. Use an external relay for safety (as shown in the figure above).
There are 4 jumpers (JP4, JP5, JP6, and JP7) on the motherboard, each corresponding with one alarm output. By
default, jumpers are connected. To connect an AC load, jumpers should be removed.
Note: An external relay is needed to prevent electric shock when connecting to an AC load.
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