wich miller model is this?

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please see the picture. It is written dynasty 200 sd, but the face dosen't match. The dx model has more knobs.any idea?Thanks Attached Images
Reply:It sure looks like the 200sd to me.  The 200dx has two more buttons, but the same single knob.  Honestly, while I've got the 200dx, I've never used a feature that's not in the 200sd.
Reply:now I feel dumb....I just realised that all the pictures I see of the sd are with the panel colsed, and on this page the panel is open....
Reply:Which .HUH????AWS certified welding inspectorAWS certified welder