I had one I built to run off 12 vdc with 2 floats, hated it. It was probably the switches I used but looking at the sump from across the room seemed to be enough disturbance to get it switching on and off like mad. Nothing I tried as a snail / splash guard made a bit of difference. I got the switches locally but they seemed identical to the ones you see with the cheap kits.
I've got 2 Blueline tsunamis that I like much better.
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