Specifications: Voltage: 12V Max flow: 840L/hour Max lifting height: 5m (It means the height that the water can reach if you connect a plastic pipe to the pump.) Features: small size, high efficiency, low consumption, low noise. Application: suitable for use in garden irrigation, ponds, freshwater and saltwater aquariums , fountains and filtration systems. Installation: When connecting the power, pay attention to minus and plus, otherwise it will not work properly.The brown wire connects to the electrode positive, the blue wire connects to the anode, the yellow and green wires do not need to be connected. Note: This pump is a submersible pump, not a self-priming pump nor a land pump. The water temperature should not exceed 40 degrees.