Features: _x000D_ 1. Full 3-stage PWM charge management. _x000D_ 2. Dual USB output, 5V output voltage, support most of electronic equipments charging. _x000D_ 3. Built-in industrial micro controller, with power off memory function. _x000D_ 4. Intuitive LCD display shows working status of the controller to users. _x000D_ 5. Double key operation, easy to adjust charge/discharge parameters. _x000D_ 6. Built-in short-circuit protection, open-circuit protection, reverse connection protection, overload protection. _x000D_ _x000D_ Specification: _x000D_ Batt voltage_x000D_ 12V/24V auto _x000D_ Charge current 20A _x000D_ Discharge current 10A _x000D_ Max solar input 23V _x000D_ Overvoltage protection 16.5V _x000D_ Equalization 14.4V _x000D_ Float charge 13.8V (default, adjustable) _x000D_ Discharge stop 11.0V (default, adjustable) _x000D_ Discharge reconnect 12.6V (default, adjustable) _x000D_ Charge reconnect 13V _x000D_ Voltage of open light Solar panel 8V (Light on delay) _x000D_ Voltage of close light_x000D_ Solar panel 8V (Light off delay)_x000D_ _x000D_ Terminal scale 28-10 AWG _x000D_ Self-consume