Vello shutterboss version ii User Manual page 14

BACKLIGHT/LOCK BUTTON
/Lock button briefly to activate
Press the
the backlight on the display. The backlight will
remain lit for about 6 seconds. Pressing the
button again during backlighting will extend
the backlighting for another 6 seconds.
To lock all the controls, except the shutter
/
release button, press and hold the
Lock button until the
icon appears in
the display. To unlock, press and hold the
Backlight/Lock button until the icon
disappears.
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