1,Upgraded version of the solar panel charging smart regulator has automatic identification of the system voltage, 12/24V automatic identification; optimized charging algorithm and charging stage to ensure that the battery is fully protected. 2,Intelligent panel battery voltage regulation and charge controller has a humanize LCD display and a man machine interface for two button operation; photoelectric cell control and working time are set according to requirements, which is practical. 3,Solar panel smart regulator has reliable overvoltage protection, short circuit protection, overload protection, overcharge protection, overdischarge protection, and full reverse connection protection; the LED display shows that the solar panel and battery are really connected to the controller, Convenient to check. 4,Solar panel battery regulator can record the total operating time of the system, record the error timer during the operation, and record the number of times the battery is fully charged, without worrying about data loss. 5,Accurate temperature compensation, automatic correction of charge and discharge voltage, improve battery performance; efficient and intelligent MPPT three level charging mode; selectable load control mode, night street lamp timer reset function. Item Type: Solar Charge Controller Material: Plastic, Aluminum Alloy Current: 50A Rated Voltage: 12 / 24V USB Output: 2.4A x 2 Size: Approx. 20.5 x 19 x 5cm / 8.1 x 7.5 x 2.0in Overcharge Current (V): 13.7V / x 2 24V Over Discharge Current (V): 10.5-11V / x 2 24V Temperature Compensation: -3mv/℃/Battery No Load Loss: <45mA Loop Voltage Drop: <200mv Display: LCD Display Waterproof Rating: IP32 Connection method: Solar panels, batteries, and solar charge controller anodes are all connected together, and a negative MOSFET series control circuit is adopted. Weight: Approx. 867g / 30.6oz 1 x Controller 1 x User Manual Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.