Sennheiser SYSTEM 2015 Instructions For Use Manual page 11

Display for the audio level
The display shows the level of the received audio signal.
Display for microphone level (internal microphone)
The display shows the level of the internal microphone.
Note:
Depending on the configuration of your receiver, this display may not
appear on the display panel.
Display for the RF level
The display shows the level of the received RF signal. The more segments
displayed, the better the reception.
Display for lock mode
If the lock mode is activated, the lock mode icon
display. If the lock mode is deactivated, the lock mode icon disappears from
the standard display.
Display backlighting
After pressing a button, the display remains backlit for approx. 15 seconds.
appears on the standard
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