Keep moisture levels optimal on your boat with help from the Johnson Pump 26014 Automatic Switch AS888/26014. Attachment is easy using the clip-on "T-slot" system. When water exceeds the acceptable level, a rolling steel ball automatically activates the attached unit so that it can effectively remove excess. This 15 amp bilge pump float switch is completely free of mercury, making it environmentally friendly. It can also be used with any 6V, 12V, 24V or 32V system.