Sennheiser HMEC 26-2 Notice D'emploi page 46

Using the headset
Unwanted background noise is filtered out, only allowing the voice
of the other person to pass through the headset.
Press the button A, to switch
the TalkThrough function on.
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The LED lights up.
Press the button again to
switch TalkThrough off.
TalkThrough can only be used when the NoiseGard™ active
noise compensation is switched on.
Connecting a mobile telephone or an audio device
CAUTION
Danger of accident due to reduced attention
Making telephone calls, listening to music or operating the
mobile telephone or audio device limits your attention
and may cause accidents.
During flight operation, do not use the headset for tele-
phone calls or for listening to additional audio sources.
14 | HMEC 26-2
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A