Step 3 Plug one end of the second interface cable into the AUX jack with the “out” icon underneath on the first Expansion Module (the one closest to the phone).
Step 4 Plug the other end of the second interface cable into the AUX jack with the “in” icon underneath on the second Expansion Module (the one next to the first Expansion Module).
Connect the Power Supply Unit
Refer to Figure 6 and the steps that follow.
Figure 6 Connecting the Power Supply Unit
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Power supply connector on the back of the Expansion Module
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