Beyerdynamic IRIS Notice D'utilisation page 32

IRIS – Description of the System
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via IR receivers without disturbing the other delegates.
Another example is museums. It is possible to provide specific information on individual exhibits. This is
achieved via infrared transmission that is limited to a specific area. Visitors listen to the information using
receivers and headphones.
These operating instructions refer to the Iris system in combination with interpreter stations from the SIS
and MCS-D ranges. To operate this equipment, please refer to the individual operating instructions.