Sennheiser MM 400 Instructions for Use - Page 12

Putting the MM 400 into operation Switching the MM 400 on/off CAUTION! Hearing damage due to high volumes! Listening at high volume levels for long periods can lead to permanent hearing defects. Please protect your hearing. Sennheiser headsets also sound exceptionally good at low DE volumes. ̈ Set the volume to a comfortable level. EN Switching the MM 400 on 1 ̈ Press the Master button ቦ and keep it pressed until the LED ቢ flashes blue. You hear an ascending beep. 5 - When switching the headset on for the first time, it will automatically FR go into pairing mode. The headset is waiting to be paired with a Blue- tooth enabled device (see page 12). - When the headset is already paired with an audio source, the IT Bluetooth connection is automatically established. You hear an ascending beep and then your audio source. - When the headset is already paired with an audio source but the audio source is switched off or out of range, the LED ቢ flashes ES blue. The headset will try for 3 minutes to connect to one of the up to 8 previously paired audio sources. If this fails, the headset automati- cally switches off after 60 minutes. NL Switching the MM 400 off 1 ̈ Press the Master button ቦ and keep it pressed until the LED ቢ flashes 3 times red. 5 You hear a descending beep. The Bluetooth connection is automatically deactivated. The headset switches off. 11