<https://www.sma-sunny.com/en/for-greater-independence-and-reduced-electricity-costs-sunny-island-3-04-4m/#primaryimage>
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"Ralf Rietze presents new Sunny Island inverter of SMA"
<https://www.sma-sunny.com/en/for-greater-independence-and-reduced-electricity-costs-sunny-island-3-04-4m/>