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SI7021 sensor communication protocol

What protocol is the Sonoff SI7021 sensor module talking over the single wire? Is this documented anywhere?

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ddi you get any answer?

please Itead, give a description of the Si7021 protocol.
How to use this device with alternate firmware ESPEASY ?



sorry, but Itead products, including used methods, file formats or protocols are Closed Source ...

everything available for public is already posted public ...

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