Dear friend, please leave theVoltage(12V DCor24V DC) you need, or we're able to ship you 12V DC as default, thank you! Features: This DC pump makes use of improved digital ingredients and wonderful wear-resistant shaft It is gentle operation, high efficiency, nice performance, long service life, Can be many years continual work, low noise, safety and environmental protection. It is widely used in industry, scientific research, aerospace industry Usage: The water pump cable (red line is positive, do not take the wrong) received an acceptable calories supply (the battery is mostly a battery, it can be a power converter), and then a good water pipe, then pump into the water, Can be used normally. (Note: The DC brushless pump is a centrifugal pump, the pump water stream with the increase of the tip decreases diving with out self-priming function, limit no water free.) Specification: Name: Solar Water pump Material: Plastic Color: Black Inlet/Outlet: 1/2" male thead Voltage: 12V DC/24V DC Maximum Rated Current: 1000MA Power: 22W Max Flow Rate: 800 L/H Max Water Head: 5m Max circulating water temperature: 100°C Size: About 3(D) x 8cm(H) Note: 1 now not take the wrong pump superb and negative. 2 now not throughout the energy converter could be connected directly to the 220V energy delivery pump. three strictly prohibited for stable acidity, alkali and other damage to the pump medium. four pump is suitable for medium temperature 1 ℃ -60 ℃. Package includes: 1 x Solar Water Pump