Hamilton ACW 4 / ACW 5 Controller pics

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I thought this was interesting…. This is a Hamilton ACW controller with v4.23 firmware installed on the chip. With a 49-1200a REV 3 board from 1996.  I am assuming this is what Hamilton charges $150 for (The jumpers)?  I assume this is ready to upgrade to the “c” version firmware also?  You would have to ask super Randy.

I have the stainless case also. If you want to purchase it let me know. I also have the whole ACW part. 🙂

All I want to know is… If this controller is undated to v4.23 wouldn’t my ACW now be a ACW 5?  What was the difference?  Besides that switch on the relay box?