I can't see that they're actually selling solar panels. What I do see is them selling a specialized switch that is powered by solar panels and a battery that can then be used to power remote devices in locations where they would otherwise need to run power lines.
It's not traditional networking gear, sure, but I can certainly see the play they're making, so I wouldn't call this a scatter-shot approach.
They did sell solar panels but the product line was mostly killed. Product number SM-SP-260W-DC-US. You can find a legacy datasheet for the product family still.
But I think this is an example of them having an ideas they only end up abandoning. They are now selling an access control solution, but would you trust them to be standing behind this in 5 years? Enough to deploy it to a customer building? Not me. Attractive for the hobbyist perhaps.
It's not traditional networking gear, sure, but I can certainly see the play they're making, so I wouldn't call this a scatter-shot approach.