IsgModbusTcpSG. DIY "SG Ready" adapter for Stiebel Eltron ISGweb. This Arduino sketch reads the state of digital input input pin of Arduino and sets the state over Modbus TCP to SG Ready INPUT1 register of ISGweb. It has overdeveloped monitoring and control.

github.com/JAndrassy/IsgModbusTcpSG

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