Sennheiser HMEC 26-2 Notice D'emploi page 39

Operation
Adjusting the volume directly on the audio system
Connect the headset to the corresponding sockets of your audio
system. Adjust the volume directly on the audio system.
CAUTION
Hearing damage due to high volumes
The headset is capable of producing high sound pressure
levels. Higher volumes or longer durations can damage
your hearing!
Set the volume to a medium level. Make sure that you
can hear critical environmental sounds and warning
alarms.
Adjusting the microphone sensitivity
+
–
Turn a small screwdriver in the
direction of the arrow to change
the microphone sensitivity.
HMEC 26-2 | 7