AVer E-I/O BOX - Manual (Page 6)

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Make sure DIP switch no.3 is ON and no.4 is ON.
Connecting Multiple E-I/O Box
You may connect up to 8 E-I/O Box to DVR system at the same time.
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- In multiple E-I/O Boxes connection, please set ID number to each E-I/O Box. The E-
I/O Box connects to DVR system will be ID # 1.
- Please set the interface type for multiple E-I/O Boxes connection, the one
connected to DVR system is RS-232 and rest is RS-485.
- How to set the ID number and interface type, please refer to the figure chart at the
bottom of the E-I/O Box or refer to Front Panel section of this quick guide.