Comment 7 for bug 782980

Patch with all points fixed.
If low/high values are same - no overlay displayed, only icon. So by changing these values user can show overlay over any type of sensor.

"Also it would be really cool if the icons could also be displayed in the sensor list within the indicator's menu although I think this may be a little tricky." - is there any GTK menu item with icon and radio-box both? I can generate some combined image online, but it's not a good approach...