Flojet Sensor VSD Pump is amazing new technology. The Flojet Sensor VSD pump is the ultimate water system that gives constant water flow while eliminating the accumulator tank. 2 Year Warranty. Unique water system has no pressure switch. VSD sensor controls hot water flow and mix. Low amp at low flow conserves energy. The ultimate water system eliminates accumulator tank. Automatically adjust to 12 or 24 volt DC electrical systems. Includes strainer. Flojet’s unique Variable Speed Drive system needs no pressure switch. Its microprocessor provides precise speed control to match the system demand. As more water is needed, the motor drives the pump for more flow. As the demand lessens, the motor slows to a super-quiet speed, yet maintains a steady pressure. The result is an unbelievably home-like flow. This smooth performance from no flow to maximum flow is sensor controlled, without any cycling – so an accumulator tank is not needed. The system is free of pulsation, water hammer and temperature swings. Amp draw reduces as flow reduces to conserve energy, ranging from less than 1 amp to a max.of 10 amps. Self priming up to 10’.Automatically adjusts to 12V or 24V input.