The 4 Ohm rating will perform the listen feature for any hailer that supports this capability

Thru-Hull Size  Screw Size Inside of Flange Size 1/2"-3/4" #6 2-1/8"

The motor is not waterproof and should not be submerged

Electronic Fuel Injection (EFI)

Holds a pair of pliers and two knives

Jabsco - Demand Water Pressure System, Part No. 36950-2000 - Amps 6 - PSI Cut-Off 40 - Volts 12 DC Bussman The 4 Ohm rating willThis heavy duty water pressure system pump is ideal for large multi fixture boat water systems. Automatic switch maintains operating pressure to 40 PSI. Reliable belt driven diaphragm design allows pump to run dry without damage. A built in check valve protects the pump against city water pressure. Pulsation Dampeners help to absorb "water hammer" and provide a steady flow of water. Large mounting pads absorb vibration which reduces noise. INCLUDES