1LCD Display: Display charging and discharging current; query of accumulated electricity generated and discharged; temperature display; optical control and delay control; the charging and discharging parameters are adjustable; with power off memory and other functions. 2Dual USB Output: This photovoltaic power controller has dual USB output, maximum current up to 5A, supporting for iPhone charging. And it has complete three phase charging management. 3Multiple Protections: Built in over current, short circuit protection, open circuit protection and reverse connection protection are all self recovery type, without damaging the controller. 4Industrial Grade Control Chip: This solar panel regulator has industrial grade master control chip, and it has anti backflow circuit, ultra low heat. 5Note: Connect the positive and negative poles of the load to the controller as shown in the manual, and be careful not to connect them reversely.