I do agree the Ultra Safety Switch is a very good switch, and there is also a high water alarm function, but bear in mind they are not maintenance free.
After I motored from Annapolis to Erie I discovered the main pump was frozen. (two other fore and aft pumps working, but in sealed compartments, and two others apparently non-existent). I replaced the main pump with a new one and cleaned the switch. It was gummed up with crud, and was effectively non-functional. I think one of the best defenses against this, besides regular cleaning, is to keep fresh oil absorbent pads in your bilge. And also keep the water out. I think I still like the electronic switches a little better. Bill Coleman Entrada, Erie, PA +1 on the Ultra Safety Systems bilge switch recommendation. Put one on the Rule pump in my Mako CC because I was tired of replacing the Rule switches just about every year. Not cheap but worth it. Regards, Dave 1982 C&C 37 - Ronin 1998 Mast & Mallet Thomas Point 34 - Katana Reedville, VA
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