Sennheiser HMEC 26-2 Notice D'emploi page 45

Using the headset
2
LED
lights up green The battery capacity is sufficient.
lights up red
Activating the "auto shut-off" function
The battery-saving "auto shut-off" function automatically switches
the NoiseGard™ electronics off when the headset is disconnected
from the audio system or when the aircraft avionics are switched
off. The headset is delivered ex-works with the function deacti-
vated. You can activate "auto shut-off" as follows:
Set the switch to the position ASO.
Switching the TalkThrough function on/off (HMEC 26-2-T only)
The headset provides excellent attenuation of ambient noise. In or-
der to allow you to communicate undisturbed with your surround-
ings while wearing the headset, the HMEC 26-2-T features a Talk-
Through function. With TalkThrough switched on, a separate
9
microphone
Meaning
The batteries are flat. Replace the batteries.
picks up acoustic signals in the immediate vicinity.
HMEC 26-2 | 13