AUDAC ARU20 Series, User Manual

5

Introduction 

Multi channel digital relay units

The ARU20x series are multi channel digital relay units which are especially designed with 
flexibility and functionality in mind. Various ways of switching the relays are provided, including 
an integrated web interface, optional paging consoles and analog contact triggering making 
the ARU20x AUDAC’s smartest and most innovative relay modules.

With this ingenious device, switching between audio sources, signal routing, and even 
customized automation setups are obtainable. The bipolar relays allow switching of balanced 
mono signals as well as unbalanced stereo signals. Normal open and normal closed contacts 
are provided as well.

Thanks to its modular nature, the ARU20x is perfectly suitable for small home or retail 
applications as well as big installations. There is no limit to the amount of ARU’s connected to 
one system. The TCP/IP functionality allows controlling the ARU20x over an existing ethernet 
network through an integrated HTML5 webserver, achieving full control via any connected 
PC, laptop or smart device. An RS485 control port allows them for being integrated with any 
matrix or other controlling system.

They are housed in a DIN rail mountable enclosure, guaranteeing an easy and clean installation 
and integration in electrical cabinets. The front of the black ABS housing provides a brief 
overview of its connection possibilities, while the back is equipped with a spring mount 
mechanism allowing easy mounting on widely available standard DIN rails. This way it’s 
possible to easily integrate it in any electrical cabinet.