Sennheiser HMEC 306, HMEC 300, HMDC 322, HMEC 400 manual Inserting / replacing the the batteries, 125

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

￿Open the cover of the battery compartment.

￿Insert four AA size alkaline-manganese batteries (IEC LR6). Observe correct polarity when inserting the batteries.

￿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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