Need help with A16 + relay module

[vitoi]

KC868-A16 OUTPUT 12V level. make sure your relay's another coin have connect with GND.

I think I won't be able to make it work with this low-level trigger board. Here's the input diagram that I found for it:

   

When A16's Y1 is connected to the relay module IN1 it gets 5V and that's why I'm seeing the led light up with a lower brightness and the resistor may be limiting the current way too much for the optocoupler to work.

   


I'll try to find a high-level trigger board or end up using those slim SSR since the final setup will be mounted on a din rail anyway