In my idiocy I tend to leave the bilge pump on or off at the wrong times so I've been looking for an automatic switch. I ran across the Water Witch solid state automatic bilge switch and it looks like exactly what I need. It just clamps on the side of the pump and senses when the resistance between its probes decreases indicating a presence of water. the probes are relatively far apart so splashes won't trigger it. Cool thing is itwith a 3-way switch it can be off/on/auto. Data Sheet and a retailer
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