Solar energy dc screw pump. Permanent magnet brushless DC motor. 1X Solar energy dc screw pump. Built-in MPPT controller to make full use of solar energy. Voltage protection: the pump automatically stops working when the voltage is too high or too low; Then every 10 minutes, when the voltage is restored to 18.The pump starts automatically and starts again. The water pump can connect directly to the solar panel in the sunlight without connecting the battery. The positive and negative lead of the water pump can not be connected. The water pump cannot work long without water. All the pumps must be submerged in water. Cable requirements: when the length of cable is greater than 30 meters, it is recommended to use 6 square or 10 square pure copper cables. It is strictly forbidden to use water pumps. The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness. Please allow slight deviation for the measurement data. International buyers please note: a. The item "24V Solar Water Pump 40/80m Deep Well Solar Submersible Pump Steel Machine" is in sale since Monday, March 25, 2019. This item is in the category "Home & Garden\Home Improvement\Electrical & Solar\Alternative & Solar Energy\Solar Water Pumps". The seller is "lilyyangstore" and is located in Shenzhen. This item can be shipped worldwide.