Professional Series (A)
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10
Rear panel I/O interface information
：
Serial Number
Name
Description
1
Alarm input
Alarm input port, connected to the alarm.
2
GND
Ground port
3
Alarm output
Alarm output port
4
RS-485
RS-485 port, connected to the PTZ.
Alarm input connection
Normal open or Normal close type
Please parallel connect COM end and GND end of the alarm detector to the GND end of the DVR
Please connect the NC port
（
or NO port
）
of the alarm sensor to the DVR alarm input(ALARM)
Use the same ground with that of DVR if you use external power to the alarm device.
Alarm output connection
This alarm output use relay output, please refer to the related parameters while connecting the relay to avoid
overload or damage to the DVR.
Material of the touch
Silver
Electrical functions
Maximum switch power
240VA
，
48W
Maximum switch voltage
125VAC
，
60VDC
Maximum switch currency
2A
Figure 4-1 Relay parameters
PTZ connection
Decoder A (B) line connects with DVR RS-485 A (B) line. If multiple decoders are connected, please connect a 120
Ω resistance in parallel at the A (B) line distal to minimize the control signal distortion caused by reflection.
1 3 4 1 2
