AVer E5000 series - Manual (Page 16)

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1.5 Pin Definition of Sensor/Relay/RS485 Port
The I/O card enables you to connect 16 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.
Pin NVR/DVR site PTZ site
TX+ RS485 TX+ signal RS485 RX+ signal
TX- RS485 TX- signal RS485 RX- signal
RX+ RS485 RX+ signal RS485 TX+ signal
RX- RS485 RX- signal RS485 TX- signal
If user uses the 2 wires for the PTZ camera connection, please connect to the
RS-485 TX+ and TX- of the DVR site.