The SolarEdge Power Optimizer is a DC-DC converter that maximizes energy yield from each solar module by performing Maximum Power Point Tracking (MPPT) individually for each panel. The specifications you have provided, such as "landscape," "850W," "125V," and "1.3+2.2m cables," are all related to the product details of the SolarEdge Power Optimizer.
"Landscape" indicates that the orientation of the power optimizer is in the horizontal or landscape position. "850W" refers to the maximum DC power that the optimizer can handle, which means that it is compatible with solar panels up to 850 watts. "125V" refers to the maximum DC input voltage that the optimizer can handle, which means that it is compatible with solar panels with a maximum voltage of 125 volts.
Lastly, "1.3+2.2m cables" indicates the cable lengths of the power optimizer. The power optimizer comes with two cables, one that is 1.3 meters long and another that is 2.2 meters long, for connecting the optimizer to the solar panel and to the inverter, respectively.
Overall, the SolarEdge Power Optimizer is designed to work with a wide range of solar panels and is a key component of the SolarEdge system, which maximizes energy production and enhances system performance and monitoring capabilities.