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Alex has asked me to post up a couple of pictures showing the 255 ext that has been in development over the last several months.
I got a late start on the welder today as I had another new model that needed to be checked before production and we needed to confirm a couple of points for suppliers so this took priority.

The first picture shows the units
Second shows wave forms
Third shows Easy start setting for AC I can post the auto settings for the easy start setting over the next day or two