Rule ECO-Switch Automatic Bilge Pump Switch [39] Oxygen Sensor Multiple applications with fiberglass cloth

Multiple applications with fiberglass cloth or mat

Just pull down the Ridged Collar and lower or raise the pole

An easy-to-read 3-1/8" diameter analog faceplate displays

All magnetic compasses come standard with 12v lighting

Northeast Canyons – Georges Bank fishing map 3D with high definition images of the seafloor

Rule ECO-Switch Automatic Bilge Pump Switch [39] Oxygen Sensor Multiple applications with fiberglass clothECO 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.