Inputs on KC868-A16. What is correct?

[admin]

my photo: when press the key, logical ="1".
   

[fproof88]

Yes, yours works but can I use 24vdc as input?
How can I use dry contacts as inputs?

[admin]

i have said: if you give 24v to digital input port, that means logical "0"

[fproof88]

I do not get an input signal that way

[admin]

if you input 24v for KC868-A16's digital input port, no any function.

[fproof88]

No there no function only when you use gnd to input

[admin]

because you need download KCS firmware, then set by IFTTT webpage. let INPUT toggle OUTPUT.
here is KCS firmware online guide: https://www.kincony.com/esp32-kcsv2-firmware.html

[fproof88]

So I cannot use 24vdc to switch the inputs?

[admin]

yes, because use 24v will do nothing. maybe you can use a 24v relay, output a dry contact signal to A16 board. just opposite state.

[fproof88]

Can you show me a diagram please