This Jebao smart MDP pump is controlled through 2.4G WiFi with smartphone and the Jebao App. This is precise control flow through the aquarium's reactors, sump, or closed loop system. With complete control through the WiFi Controller, you can control the speed and feed modes. No copper components. IC electronic detection, automatic power-off protection upon no water, Motor protection if rotor blocked Wear resistant ceramic shaft, longer operation life. For saltwater and freshwater. MDP-2500 Input:24V Power: 23-watt 110-120V 60Hz, Max Flow: 660gph, Max head: 8.2ft, Dimension: 5x3x4 inch MDP-3500 Input:24V Power: 28-watt 110-120V 60Hz, Max Flow: 924gph, Max head: 11.5ft, Dimension: 7x4x5 inch MDP-5000 Input:24V Power: 40-watt 110-120V 60Hz, Max Flow: 1453gph, Max head: 13ft, Dimension: 7x4x5 inch MDP-6500 Input:24V Power: 45-watt 110-120V 60Hz, Max Flow: 1637gph, Max head: 14.8ft, Dimension: 7x4x5 inch MDP-8000 Input:24V Power: 65-watt 110-120v 60hz, max flow: 2113gph, max head: 17ft, dimension: 8x5x6 inch MDP-10000 Input:24V Power: 80-watt 110-120V 60Hz, Max Flow: 2641gph, Max head: 19.7ft, Dimension: 8x5x6 inch MDP-13000 Input:24V Power: 95w 110-120V 60Hz, Max Flow: 3566gph, Max head: 19.6ft, Dimension: 9x4.5x6 inch MDP-15000 Input: 24V Power: 105w 110-120V 60Hz, Max Flow: 3962gph, Max head: 22.9ft, Dimension: 9.5x5x6 inch MDP-20000 Input: 36V Power: 165-watt 110-120V 60Hz, Max Flow: 5283gph, Max head: 31.1ft, Dimension: 9.5x5x6 inch