Hello everyone. I need to put a sonoff mini between these two cables (with three wires inside each) could someone tell me where i need to put those? thanks a lot in advance
We can only guess with the information you have given us. Is that good enough for you?
Generally this is how the cable colors are. Note generally. Make sure they are before you connect anything.
Green/yellow is ground. They should not be connected to the Sonoff. Just connect the two together and put tape/shrink tubing over the joint.
Blue is generally neutral (N).
Brown is Live (L).
We don’t know which is from your central and which is to your load. Do you know?
If you do and you know that the colors are correct:
Connect the brown from central to L in.
Connect the blue from central to N in.
Brown going to the load -> L out.
Blue going to the load -> N out
But don’t assume the colors are correct, test them. And remember that those wires are deadly when you measure them with the multimeter.