Unitron Quantum User Manual page 22

DuoLink
If DuoLink is enabled, then changing the volume,
program or comfort-clarity setting on one
hearing aid, will automatically make the change
to both hearing aids at the same time.
For example, if your push button is configured
as a program control and DuoLink is enabled,
when you push the button on your right hearing
aid, the program will change in both hearing
aids.
Learning
Your hearing aids will learn your adjustments
in different environments, if this feature is
available and has been enabled by your hearing
healthcare professional. Over time, the hearing
aids will adjust the default volume and comfort-
clarity settings to the levels that you typically
use.
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