VaySunic microinverters come in two versions: built-in WiFi and built-in Sub-1G. For example,in the model VM800WE-P2, "W" stands for WiFi, while in the model VM800BE-P2, "B" stands for Sub-1G. The WiFi version is suitable for general distance use, while the Sub-1G version is suitable for long-distance use, with a range of up to 400 meters.In addition, SCG(Solar Control Gateway) is used to connect Sub-1G versions, which can connect multiple micro inverters and achieve further distances.