These new DC Pumps improve on the previous DCT pump design as follows: Sine Wave controller technology provides super quiet operation New Digital Controller- Speed Control Settings Between 30%-100% in 1% increments Digital display of power consumption. NO copper components, safety and and reliable for marine water tank. Suitable for external and internal operation Seals for input and output connections Improved Head Pressure Performance over DCT Models New Enclosed Impeller Design For a more Quiet Operation Energy Saving up to 65% IC Electronic Detection- Automatic Power Off Protection Upon No Water Wear Resistant Ceramic Shaft FEATURES: Electronic detection of no water enables automatic power off protection Motor protection if rotor is blocked Can be used in Marine and Freshwater applications No copper elements Long operation life is achieved by the use of wear resistant ceramic shaft Soft start operation - pump gradually builds up to set flow rate Feed mode disables pump for 10 minutes Speed settings (30% - 100%) in 1% steps with power consumption indication - setting is retained if power is lost. WHATS INCLUDED: DCP Pump Sine Wave technology Controller Power adapter with 240V Australia Plug (Note some seller not providing Australia plug which not suit for Australia use and they are not 240V) Flow Rate: Adjustable from 1950 LPH to 6500 LPH in 1% steps Power: 55w Head Max: 4.5m Dimensions (cm): 19.6 x 16.3 x 10.4 Connectors for rigid pipe Hosetail Connectors for flexible tube Inlet filter Instruction