The whisper quiet self-priming Aqua Jet Flow Master WPS 5.0 pump incorporates state-of-the-art electronics to automatically control pump speed. The digital controller adjusts water flow as the demand is increased and decreased while maintaining a very smooth flow. The unique variable flow feature of the Aqua Jet Flow Master WPS 5.0 pump makes it a smart choice for better flow, lower noise and less amp draw.• Type: Self-Priming• Pump Operation: 12 Volt DC• Flow Rate: 5 Gallon Per Minute• Pressure Rating (PSI): 50 Pound Per Square Inch• Length (IN): 9.4 Inch• Width (IN): 8.22 Inch• Height (IN): 4.49 Inch• Material: Nylon/ Polypropylene Body• With Pressure Switch: Yes• Operates In Fresh Or Sea Water• Recommended To Install With An Accumulator Tank• Easy, Low Cost Maintenance Self-Priming Pressure Switch Standard Long Service Life | Johnson Pump Fresh Water Pump, 12 Volt; Self-Priming; 5 Gallon Per Min