I found an ato in a box and cant find any info on programming it, just wondering if someone has seen this model before or knows where I can find a link to the manual...
it is a reef fanatic level controller, I can find their ato but not the one I have?
I'm in the same boat; can't find reference to the older model. I'm sure it works just like most of the others with two float switches. Choose A or B for your high water and low water respectively. Just experiment with it and I'm sure you can figure it out.