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. 1 xSolar Panel Charge Controller 2 x Cables 1 x User Manual