Rule ECO-Switch Automatic Bilge Pump Switch [39] Category_Winter Covers Includes all necessary fittings for

Includes all necessary fittings for a 12 volt single cylinder system

Fluid flows through a concealed hole in the upper hinge at the top of the actuator - thus eliminating external hoses subject to damage

Outside Grill - 9-1/16" x 6" (229mm x 152mm)

Product Diameter: 17-1/8"

Rule ECO-Switch Automatic Bilge Pump Switch [39] Category_Winter Covers Includes all necessary fittings forECO Switch The Rule ECO Switch is an ecologically sound automatic bilge pump control control switch. Featuring a non mercury design, the pump operates with simple air pressure. As water rises in the bilge, air rises in the air tube that is attached to switch. This air pressure activates the switch which controls your pump. There are no moving internal parts, all wiring is out of the water, and there are no submerged electrical connections at all.