In the upper right corner of all Varia Vison screens it displays a tiny ON+ status.
I haven't been able to trace what that is indicating. Is it an external sensor? I turn off the
radar and it's still there.I don't have a convenient way of turning of the Heart Rate Monitor,
Cadence Sensor, Speed Sensor or Vector power pedals because they are internally powered
by their own batteries. So what is ON+ really telling me. If I turn off my Edge bike computer
the whole display changes so a separate indication is pointless. It was the same on a 520+
and my current 830.