1,Intelligent and Convenient: The solar charge controller is MCU control, which has the advantages of intelligence, strong adaptability, and reliable functions 2,MPPT Technology: The solar panel charge controller applies MPPT maximum power point tracking technology, which can work at the best power point of the I V curve, and the efficiency is up to 99 percent 3,Long Lasting Battery: The 12v solar charge controller adopts high accuracy temperature detection and compensation circuit, and the battery life is longer 4,12V 24V: The solar charge controller has automatic identification of 12V 24V system voltage and three stage battery power display. with exquisite structural design and circuit design 5,USB 5V Output: The MPPT solar charge controller has overcharge, overdischarge, overcurrent, short circuit, anti reverse connection protection. The 5V output with USB connector meets the charging needs of digital products 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.