Feature: 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. Specification: Item Type: Solar Charge Controller Material: ABS Battery Voltage: 12V 24V Auto Charging Current: 30A Discharging Current: 10A Maximum Solar Input Voltage: 12V Battery (up to 23V); 24V Battery (up to 46V) Applicable Battery Voltage: 9V-24V Charging Cutoff Voltage: 14.4V (Default, adjustable) 8V-30V Discharging Cutoff Voltage: 10.7V (Default, adjustable) 7V-27V Discharge Reconnect Voltage: 12.6V (Default, adjustable) 8V-28V Light On Voltage: Solar Panel 8V (Light delay) Light Off Voltage: Solar Panel 8V (Light off delay) USB DC Output: USB < 2A, DC < 5A Operating Temperature: -35℃ to +60℃. Package List: 1 x Solar Charge Controller 2 x Cables 1 x User Manual