Interesting.... I didn't know you could buy these kits. It seems a little expensive though, considering you still have to do most of the building.
I recently bought a little relay from the local electronics shop (only cost a few bucks), and I have a couple of these float switches, so was going to make my own. I have lots of old transformer power supplies lying around along with old cords. I just need to figure out the schematic with the relay, and then give it a try. I'm busy on other stuff right now, but will get to it eventually.
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