Features 1、Using industrial‑grade main control chip, good performance and durability. 2、Large&#8209;screen LCD display, adjustable charge and discharge parameters, with power&#8209;off memory function. 3、Complete 3‑stage charging management to better meet your needs. 4、Built‑in over‑current, short circuit, open circuit, reverse connection protection, all are self‑recovery type, do not damage the controller. 5、Dual USB output, maximum current up to 2A, dual MOS anti&#8209;backflow circuit, ultra&#8209;low heat generation. Specification Condition: 100% Brand New Item Type: Solar Charge Controller Material: ABS Color: As the Picture Shown System Voltage: 12V/ 24V (Automatic Identification) Maximum Photovoltaic Voltage: 12V System <25V/24V System <50V Increase Charging Voltage: B01 Sealed Type: 14.4V, B02 Colloid Type: 14.2V, B03 Open Type: 14.6V. Floating Charge Voltage: 13.7V (Default Value, Adjustable Range: 12.7-15V) Discharge Cut-off Voltage: 10.7V (Default Value, Adjustable Range: 9-11.3V). Discharge Recovery Voltage: 12.6V (Default Value, Adjustable Range: 11.5-13V). Standby Current: <10mA USB Output: 5V /2A Maximum Working Temperature: -35-60℃ Optional Rated Current: 10A, 20A, 30A,40A, 50A, 60A Size: Approx. 133 x 70mm/5.2 x 2.8in Package List 1 x Solar Charge Controller 1 x Instruction