Attwood 500 GPH Shower Sump
The S3 Series Digital Bilge Switch incorporates a proprietary Electronic Sensing technology to detect bilge water levels and trigger pump activation.  Attwood has engineered the bilge switch to operate in any bilge water mixture consistengly without failure.  You can rest ensured that your pump won't be exposed to continuous cycling as the S3 switch won't be fooled by splashing bilge water, chemicals, sludge build up or foam.   For added convenience, the switch can be mounted on teh floor of the bilge directly to a stringer wall or alongside the basket of the pump without added components or brackets.  It comes equipped with fully sealed electronics that are completely protected from water or chemical damage.  More importantly, the switch is free of moving parts that can jam up, break or wear out over time.