Hamilton ACW 4 v1.4 controller Rev. 1 / Rev. 3 or the 2 line display version.

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From left to right picture…. 1) I always love the mistakes…. you would think they would redo the board?  2) Light on the board…. I like it!  Not on the newer board.  3) Potentiometer…. why for the display?  I did not touch it!  🙂  4) Also brings a new meaning to a “2 layer board”…. bad joke?  🙂