Shurflo water pump - Multi-fixture 12v - has three independent pumping chambers. Heavy-duty permanent magnet motor provides low current consumption. The double ball bearing drive is extra quiet. New low profile snap action switch is easy to install. 12V DC, 4.0 amp draw. 3-1/2 GPM, 45 psi. This multi-fixture Shurflo pump provides three way dependability.  Extreme Series High Flow pumps use a microprocessor to monitor your system’s water pressure and adjust motor speed to precisely deliver the smooth, “just-like-home” flow you need, eliminating unwanted cycling without a pressure switch or accumulator tank. Runs quietly at any flow rate or motor speed. 12-volt with over/under voltage and thermal overload protection. We offer you the best so you worry less. With high quality and performance that outlast the other brands. We carry all the accessories and hardware needed to make installation easy and affordable. This 12 Volt Automatic demand model is designed for showers, kitchen sinks, outside showers and much much more.