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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 (u ‘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
Ǡ Open the cover of the battery compartment.
Ǡ Insert four AA size alkaline-manganese batteries (IEC LR6). Observe correct polarity
when inserting the batteries.
Ǡ 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.