Sennheiser NOISEGARD HMEC 305 User Manual download pdf (Page 15)

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2. Connecting the headset to the battery pack

(except HMEC 302, HMEC 305 and HMEC 306)

The NoiseGard™ electronics of the HMEC 300, HMEC 305-C, HMEC 322, HMEC 400 and

HMDC 322 headsets can also be powered via the BP-03 battery pack ( ‘Recommended

accessories’). The battery pack can be operated either on standard or rechargeable

batteries (not included in the delivery). However, to ensure a longer operating time, we

would recommend using standard AA size alkaline manganese batteries (IEC LR6). If

operated on rechargeable batteries, the operating time will be reduced to approx. 3

hours.

Inserting / replacing the the batteries

씰 Open the cover of the battery compartment.

씰 Insert four AA size alkaline-manganese batteries (IEC LR6). Observe correct polarity

when inserting the batteries.

씰 Close the cover of the battery compartment.

LED operation and battery status indication

The battery pack has two control LEDs.

Green LED: The battery pack is turned on and the battery capacity is sufficient.

Red LED: The batteries are low. Replace the batteries.

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Sennheiser NOISEGARD HMEC 305 User Manual Page 15