Features: Advanced MPPT technology maximizes solar energy harvest with 12V/24V auto recognition, ensuring best charging efficiency for , , LiFePO4, and batteries. build in high performances controllers enables three stage charging, multiple defense systems (overvoltage/current/short circuits), and 4 loading type (light/delay/charge/timers ) for multifunction energy management. Ideal for owners, off solar system users, and DIY enthusiasts search reliable battery maintenance in harsh environment. Weather resistant ABS housing with rating ensures strong operation in coastal, desert, or extreme outdoor conditions requiring waterproof solar charge controllers. Features battery temperature compensation and power statistics logging to extend battery while supporting diverse charging processes for solar energy systems. Specifications: Component : ABS Length: about 155mm/6inch Width: about 140mm/5.5inch Thickness: about 38mm/1.5inch Current: 10amp /20A(optional) Package Includes: 1xSolar Charge controllers note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the differences between different monitors, the picture may not reflect the actual colorful of the item.