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STB IO - why the STBACO1210 doesn't work if two sensors are connected with internal power supply mode
Question:
why the STBACO1210 doesn't work if two sensors are connected with internal power supply mode

Answer:
For STBACO1210,the two output channels are none isolated and you could choose one these options:
1, use external isolated DC power supply to each channel.

2. if use internal power supply, you can only use one channel to wire sensor (another channel as spare)

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