(10-26-2023, 11:32 PM)administrador Wrote: se você quiser outra placa de 2 relés com porta RS232, você pode conectar com a placa A4. ou você pode usar 2 GPIOs gratuitos conectados ao seu módulo de relé de extensão.
Hi Kin, thanks for the feedback.
This second option is the one I'm interested in, but there are no outputs available on the KC868-A4.
Can't these pins D1, D2, D3 and D4 be programmed to act as outputs?
I looked at the KC868-A4 technical sheet, and from what I understand it seems that pins D1...D4 are the same as the relays. Is this correct?
I have this image board:
![[Image: relay-2ch.png]](https://i.ibb.co/MZHV9y7/relay-2ch.png)
Let's automate everything...