Help What do the buttons mean on my Sumo Tuner

I just got a Sumo Charlie Tuner, but there isn't a manual,thus I need help with a few functions on the front. If someone has a copy of the manual I would pay $10 for a copy.
A) Blend - Does the green light mean the Blend is on or off?
B) Filter- Does the Red light mean the filter is on or off? Is this a high or low filter?
C) Narrow- Does the Red Light mean the narrow is on or off?

Thank You for your help!...Jerry