AUDAC ARU20 Series, User Manual, Page: 14 / 28

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Connections overview
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1) 24 V DC mains voltage input connection
2) Ethernet RJ45 connection
3) RS485 databus connection (RJ45) with linkthrough for daisy chaining (only ARU208)
4) Contact trigger inputs
5) Relay contact outputs
6) Analogue audio line out connection (balanced)
7) Normal open (NO) relay contact inputs
8) Normal closed (NC) relay contact inputs