Which hardware for Input signal

yousuf · March 22, 2022, 5:46pm

Hi
I am looking for a hardware where I can input the status of 2 floating switch to Home Assistant Node-red to do further automation

Hellis81 · March 22, 2022, 6:05pm

What kind of floating switch?
This one?

It looks kind of floaty…

yousuf · March 23, 2022, 4:15pm

Yes exactly the same floating switch for water level indicator
Water high = OFF
water low = ON

Hellis81 · March 23, 2022, 4:49pm

I that case you probably send a voltage through one of the cable and it returns in the other if there is a connection.
But that is only my assumption.

In that case you need to send between 4 and 250 volts DC according to the specifications and put a voltage divider on the receiving end to make sure the ESP-based device does not fry.

So the answer to the question is an ESP, that is my suggestion.

yousuf · March 27, 2022, 12:00pm

Thanks Hellis for suggetion
ESP is a great choice.
I also found KC868-H4B from Kincony which have 4 input and 4 output relays

I made below design for my project