The Jebao New DC pumps offer an energy saving alternative in the submersible pump line-up. Running on 24VDC, these pumps use over 50% less than other submersible pumps, which also means less heat transfer. Features a 6 speed controller with 10 minute feed mode. The DC pumps also feature a slow startup mode, when you power on the pump, the flow will slowly ramp up to full speed in about a minute, no more splashing in the tank High performance motor with innovative electronics and energy savings up to 50%. IC electronic detection, automatic power-off protection upon no water. Motor protection if impeller is blocked. Can be used in freshwater or saltwater. Note: DC-9000 and DC-12000 do not include front intake screen.