1 hp solar well pump has 48vdc working voltage, 925 gph max. flow and 310ft max. head. The shell material of solar well pump is 304 stainless steel. It built-in a brushless dc motor with 4000rpm speed, can reach 45% efficiency. ATO solar powered well pump system also contain a dc pump controller, which can show power, voltage, current and speed value real time. ATO 1 hp Solar Well Pump with DC Pump Controller package included: 1 * Solar water pump 1 * DC controller 1 * Stainless steel float switch (water level sensor for the tank) 1 * Pump outlet joint connector 1 * Splice kit for cable join 1 * Splice kit for waterproof 1 * User manual