User's Manual

9
3.3 LOCKING THE BUTTONS (“KEY-LOCK”)
You can deactivate the buttons to avoid undesired operation of the buttons:
Activate “Key-Lock”:
Press the M and S/L buttons simultaneously for
at least 2 seconds.
Display for activated “Key-Lock”:
If the buttons are deactivated 4 dots will appear
on the border of the display.
If you press any button in this state, the
information “LOCKED” will appear at the bottom
of the display.
• Operation elements
Operation elements
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