User`s manual

Chapter 1 Installing Hardware
12
1.4 Connecting External Sensors/Relays
The I/O Audio card enables you to connect 4 sensor inputs and 3 relay outputs. You need to
use 1 D-type 15 Pin connector cable to connect the external I/O box and the I/O Audio card as
below.
The optional I/O Audio card allows you to connect 4 audio inputs. Connect the audio cables to
audio inputs if necessary.