1、[Advanced Charging Management] This solar charge controller features built in industrial microcontroller, enabling comprehensive 3 stage charging management for efficient energy utilization. 2、[Adjustable Parameters] With adjustable charging and discharging parameters, this controller allows for customization based on specific requirements. It also has power memory function, ensuring uninterrupted operation even after a power outage. 3、[LCD Display] The large backlit LCD screen of this solar panel regulator allows you to view the charging and discharging current, accumulated power generation and discharge, temperature, and light plus delay control. 4、[Multiple Output Options] The controller offers dual USB outputs and four DC5521 ports, providing versatility in powering multiple devices and appliances. 5、[Multiple Protection] The solar charge regulator comes with short circuit, open circuit, reverse polarity and overload protection, reducing the potential of damage to connected devices.