Sennheiser HMEC 26-2 instruction manual Powering NoiseGard via two rechargeable batteries, Meaning

Using the headset

Powering NoiseGard™ via two (rechargeable) batteries

￿Insert two 1.5 V AA alkaline batteries (IEC LR 6) or two 1.2 V AA rechargeable batteries (IEC LR 6). Observe correct polarity when inserting the batteries.

The operating time with batteries/rechargeable batteries is approx. 60 hours. With NoiseGard™ switched on (see page 11), the LED 2 provides information on the remaining battery/rechargeable battery capacity:

LED 2	Meaning
lights up yellow	The battery capacity is sufficient.
lights up red	The batteries are flat. Replace the batteries.

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 deactivated. You can activate “auto shut- off” as follows:

HMEC 26-2 13