Omniksol-13k-TL/17k-TL/20k-TL
Double MPPT , MPPT accuracy up to 99.9%. 
IP65 design, work properly under severe outdoor circumstances
Full solution of safety protection, DC switch integrated
Flexible input and output connections, support RS485, Ethernet and USB communication
Transformerless design and high power density, lghter and more convenient for installation