Features: 1.High Efficiency: Combining a variety of tracking algorithms, it can quickly locate the best working point of the I?V curve, with faster response speed, higher tracking efficiency and circuit energy conversion efficiency. 2.Full Electronic Protection: Battery reverse connection protection, PV reverse connection protection, PV short circuit protection, charging overcurrent protection. 3.Multifunctional: Support for Modbus protocol. You can connect an external LCD screen or a Bluetooth module to view the device running data and status, and support to modify the controller parameters. 4.Temperature Compensation: Built in temperature detection, through derating charging, no need for a fan, and stable operation in extreme temperature environments. 5.Current Limiting Charging Mode: When the power of the solar panel is too large and the charging current is higher than the rated value, the controller automatically reduces the charging power to make the solar panel work under the rated charging current. 6.Parameters Adjustable: Support GEL batteries and lithium batteries, etc., users can customize the charging parameters. Suitable for solar photovoltaic systems such as home power generation, base stations, RVs, yachts, ships, etc. Specification: Item Type: Solar charge controller_x000D_ Material: ABS_x000D_ Charging Type: MPPT_x000D_ Working Voltage: 12V/24V automatic identification_x000D_ Maximum Charge And Discharge Current: 20A_x000D_ Solar Panel Maximum Open Circuit Voltage: 100V (at the lowest temperature), 92V (at the standard temperature of 25C)_x000D_ Maximum Photovoltaic Input Power: 260W (12V), 520W (24V)_x000D_ USB Output Voltage: 5V/1A x 2_x000D_ Standby Consumption: 50mA_x000D_ Working Temperature: -20-+55_x000D_ Terminal Wire Gauge: 10m/7AWG_x000D_ Waterproof Grade: IP30_x000D_ Rechargeable Battery: Gel battery, lithium battery and more_x000D_ Applicable Scenarios: Solar photovoltaic systems such as home power generation, base stations, RVs, yachts, ships, etc.