You can't tell just by the image. You need to rotate the "Starts Volts DC" to determine if it is set at 11.5 or off. If you want to set it, fully rotate it counter clockwise, note where off is at on the knob, rotate the knob clockwise to the desired voltage.
As a tip, I have worked with many controls that had similar knobs, it was common to put a dot of bright red paint (or nail polish) on the knob to better indicate where it is set at. ~CA
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2010 GreyHawk 31SS
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