John, If you have multiple inverters at the same site these can be daisy chained together on the WebBox so that all report and are summarized on the same portal page. Wiring diagrams for this configuration are absent the SMA documentation but the SMA support guys for this product are helpful and knowledgeable.
I also like the Sunny SensorBox which provides Pyranometer, and module temperature data. It also supports an ambient temperature sensor and anemometer. If this is going into an educational setting it's nice to be able to correlate the system output with the environmental data. Cheers Carl
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