Picking the right switch or sensor for your bilge is key to prolonging its life. For example, the traditional float switch causes energy spikes within your bilge that over time can damage your pump. Every time a mechanical float switch closes its contacts it has the potential to generate voltage spikes many times higher than the operating voltage (see app note). Blue Guard Innovations’ (BGI) has developed a line of solid-state switches and sensors that have 100 percent no moving parts and significantly reduces the energy spikes, thus prolonging the life of your bilge. The only question remains is which one is right for your boat?