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1.5 Pin Definition of Sensor/Relay/RS485 Port
The I/O card enables you to connect 4 sensor inputs and 4 relay outputs. Just connect the
external sensor and relay pin directly to the I/O card pinhole. Check the table below and
locate which pinhole is assigned to sensor input and relay output.
The signal from the sensor (i.e., infrared sensors, smoke detectors, proximity sensors, door
sensors, etc.) is being transmitted to the I/O card and this triggers the system to respond
and send signal to relay device (i.e., alarm, telephone etc).
RS485 Pin definition
When connect PTZ camera through RS485 interface, please refer to the following pin
definition to connect the DVR and PTZ.
If user uses the 2 wires for the PTZ camera connection, please connect to the
RS-485 TX+ and TX- of the DVR site.
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