JABSCO SENSOR MAX 17 WATER PUMP. This water pump eliminates the need for accumulator tanks and pressure switches in freshwater systems. When an onboard faucet is opened, other pumps have to cycle on and off to provide the appropriate water pressure, which causes pulsing. The new Jabsco Sensor-Max VSD pump has a motor that runs only as fast as it needs to according to demand. A pressure sensor maintains a constant pressure in the boatÆs plumbing. The result is a quiet, ôhome-like,ö steady flow of water without cycling, as well as a reduced current draw at all flow rates. The Sensor-Max VSD pump adjusts automatically to 12- or 24-volt systems, and has no switch, points or contacts to wear out. So, it will last longer and use less energy than constant-speed pumps. And, by eliminating the accumulator tank, it will also save space. Features include: * Variable Speed Control * Unique constant water pressure û NO pressure switch. * Solid State Pressure Sensor * Electronically controlled variable flow. * Controls Pressure by Changing Motor Speed * Gives constant flow and hot water mix. * Thermal overload protection automatically stops motor should it overheat due to overload, with auto re-start feature. * Speeds Up As Demand Increases * Eliminates accumulator tank. * True sensors regulated water pressure. * Nearly Silent Operation / No Cycling * Up to 4.5 gpm (17 lpm) output. * Self-priming up to 10ft (3m) / Runs Dry * Runs silently under normal use. * Automatically adjusts to 12 Volt or 24 Volt dc power input.