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.Improve the water shortage problems of the area without electricity. The 12v solar water pump system are recommended to be powered by 18v Monocrystalline / Polycrystalline solar panels in parallel connection; The 24v solar water pump system are recommended to be powered by 36v Monocrystalline / Polycrystalline solar panels in parallel connection. 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. The item "12/24V 20-80M Head Solar Deep Well Bore Hole Water Pump Submersible Pump 2/3m³/h" is in sale since Thursday, July 5, 2018. This item is in the category "Garden & Patio\Watering Equipment\Water Pumps & Pressure Tanks". The seller is "onepoint18" and is located in Leicestershire. This item can be shipped worldwide.