Deltec's new flag ship series of true sine wave pumps driven by brushless motors. The included controller can set power consumption and performance via a wattage display. The pump can either be installed inside or outside a sump. The new E-flow Pumps provide a high flow rate and pressure at low power consumption and are almost silent in operation. E-Flow 12 - Silent running external and internal pump with a 11,400 lt/hr duty. Features Deltec 24v E-Flow Pumps are almost silent in operation due to the all new DC brushless motor. All Deltec E-Flow Pumps are protected by an over load protection circuit and if the impeller becomes blocked the pump is switched off automatically. All models include a control panel that allows the pump to be adjusted for power output . By using the up and down buttons on the control panel power output in watts can be adjusted electronically in 13 stages(E-Flow 12) down to 20 watts. If power is lost the pump will restart at its old power setting Delivery for this item is 5-7 Days.