1,ADVANCED MICROCONTROLLER: Built in industrial microcontroller of the solar controller guarantees low heat generation and defends against reverse current. 2,MULTIFUNCTIONAL LCD DISPLAY: Features a large screen that shows charging and discharging currents, cumulative power generation and consumption, temperature, light control, and delay control. Adjustable parameters and with power outage memory functions. 3,DUAL USB OUTPUTS: Comes with double USB outputs for convenient charging. Equipped with a backlit LCD screen and four DC5521 sockets to meet your needs. 4,EFFICIENT 3 STAGE CHARGING: Our solar charge controller utilizes a comprehensive 3 stage charging management system for optimal charging performance. 5,BUILT IN PROTECTIONS: Provides built in protections against short circuit, open circuit, reverse current, and overload, the solar controller ensures a safe and reliable operation.