Sennheiser 250 instruction manual Replacing the batteries

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Replacing the batteries

When the batteries are almost flat, the LED flashes. When the batteries are completely discharged, the NoiseGard 2.0 active noise compensation automatically switches off (fail safe operation). Replace the battery as follows:

Note:

Always replace the two batteries at the same time.

￿ Open the battery compartment by pushing the catch and open the cover.

￿Remove the battery.

￿Insert a new AAA size battery as shown in the diagram on the left. Please observe correct polarity when inserting the battery.

￿ Close the battery compartment . The battery compart- ment cover locks into place with an audible click.

Note:

Remove the batteries from the battery compartments if the headset will not be used for extended periods of time.

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Contents Hmec Contents Important safety instructions Not in use Delivery includes Hmec 250 headset Page Operating elements TT Volume + buttonTT Volume button TalkThrough buttonLED indications Connecting the headset Preparing the headset for useInserting the batteries Connecting a mobile telephone Connecting an additional audio player Adjusting the microphone sensitivity Switching between mono and stereo modeUsing the headset Adjusting the headsetAttaching the cable clip Adjusting the volume Switching the TalkThrough function on/off Adjusting the volume of the TalkThrough functionPress the TT Volume + button Switching NoiseGard on/off Replacing the batteries Folding up the headset Care and maintenance Replacing the earpadsAccessories and spare parts Replacing the wind shieldSpecifications HeadphonesGeneral data Connector assignment Microphone incl. preamplifierManufacturer declarations