Sennheiser NOISEGARD HMEC 305 User Manual download pdf (Page 12)

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Powering options

There are three options for powering the NoiseGard™ active noise compensation:

1. Connection to the on-board system (12–35 V DC)

2. Connection to the BP-03 battery pack

(accessory, except for HMEC 302, HMEC 305 and HMEC 306)

3. Connection to the cigarette ligther socket (12–35 V DC) via adapter cable

(accessory, except for HMEC 302, HMEC 305 and HMEC 306)

The supply voltage for the NoiseGard™ system is processed by the in-line electronics in

the connecting cable.

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Sennheiser NOISEGARD HMEC 305 User Manual Page 12