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KC868-A6 - how to connect an optocoupler - Printable Version

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KC868-A6 - how to connect an optocoupler - itpraktyk - 12-22-2025

Hi!

I would like connect to the KC868-A6-V1.4SP an optocoupler - similar to https://pl.aliexpress.com/item/1005008446930626.html . My goal is to detect and react for switching 230V power in monitored circuit.

I flashed the KC868-A6 board with ESPHome - for now with default configuration.

Can someone help me understand
- from which pin should I take a power source for low voltage optocoupler side 
- where to connect its output to the KC868-A6 board
- what I have to add to the ESPHome configuraiton?

Thank you in advance.


RE: KC868-A6 - how to connect an optocoupler - admin - 12-23-2025

find a dry contact signal output module, connect to KC868-A6's digital input port.