DC input, wide voltage(working voltage: 10-22V). Built-in MPPT which can make the best use of the solar energy. The pump can be directly connected to solar panels in sunshine without controller.Over-voltage protection / Under-voltage protection : The pump will stop working automatically when the voltage is too high or too low; Then it will detect the voltage every 10 minutes, and it will start to work automatically when the voltage is between the working voltage range of the pump. Environmental protection, achieve zero carbon dioxide emissions. Solved the water shortage problems of the area without electricity. Village or family water supply. Water supply for bivouac or camping car.
Do not mix the positive (+) and negative (-) connection. Do not operate for long time when there is no water in the pump. The pump is submersible pump, it must be full submerged in the water.
PS: 6 mm² or 10 mm² copper wire is required when the cable length is too long. 18V Monocrystalline / Polycrystalline solar panels in parallel connection. If you just need the pump to work in sunshine, it can be directly connected to solar panels without controller. You need totally about 240w (18v) solar panels. If the sun is not very well, you can use more solar panels.
If you also need the pump to work during the night time, or even in cloudy and rainy day, you also need controller and battery. 1 Pcs Deep Well Bore Pump. The item "20M Solar Power DC Water Pump Deep Well Submersible Pump 3m³/h 24V, Solar Energy" is in sale since Wednesday, October 10, 2018. This item is in the category "Garden & Patio\Ponds & Water Features\Pond & Fountain Pumps".The seller is "renergy2017" and is located in Leicestershire. This item can be shipped worldwide.