Hi again, first I want to thank you for the answers. Today I
make a test with my gear: Aristo D2 cold light + Zone VI
stabilizer + sensor.  I put the sensor on the cold light and I
have this:  1. At the "A" the lamp intensity is low an I see a
lot of fluctuation on lamp / the led show green = stabilized ...
are ok? 2. When I rotate the button I can go at "F" = show green
= stabilized ... are ok? 3. On "G" the led is red, so the
maximum value is "F" ... correct?  Obs: On the test I connect
only the head cord, (without wall cord).  When I put only the
cold light , the light power is hi, and the fluctuation are low.
Are normal to happen this?  Is better to use Zone VI stabiliser
on Aristo? or is better without? Why I see fluctuation on lamp
at low intensity? it's normal? This will disappear if the head
is heated?  Thank you for your time