The Complete Beichen Soulary Solar Pumping System includes three mainly parts and necessary accessories: Mainly Parts: 1. "Soulay Solar photovoltaic panels" convert sunlight to electrical energy which is passed to the solar pump controller. 2. "Soulary controller" stabilizes the voltage and output power to drive the pump motor. If backup batteries (optional) are installed in the system, then the complete solar pumping system including: pump+controller+water level sensor+batteries+cables+solar panels+pipe+some spared parts.