The LCD displays the voltage, current, and power information of the fan, solar energy, and 2 loads, and can set related parameters. The load stabilized voltage output function, the load can still output the rated power with stable voltage in case of battery power loss. The controller has dual power supply, both solar energy and storage battery can power the controller, intelligent choice. It solves the problem that the controller cannot start due to the power loss of the battery. The shell is well sealed, and the internal PCB is sprayed with three anti-paints, and the overall moisture-proof, dust-proof, and anti-static effects are good. Wide range of applications: suitable for solar power systems such as solar power generation systems/solar street lights/smart home/solar chargers/solar ventilation systems/solar light boxes/solar billboards/solar traffic warning lights, Manufacturer: SOYWIM