My situation: I have a house with normal light fixtures with the rocker switches. There is a fuse box where all the wires go into house. when I push the rocker switch the light goes on, and when I push again it goes off.
Now I want to integrate in my fuse box the sonoff 4CH pro R2 without preferably running extra wires. Can I put the sonoff inline so I can use my normal rocker switches on the wall and when I am in another mood use the tasmota to turn the light on and off independent of the state of the rocker switch.
You need to connect the rocker switches to GPIOs on the Sonoff (and probably use RC filters to prevent noise induced on the long cable runs false triggering the Sonoff). It is unlikely you will be able to re-purpose the existing wiring for this. You then need to connect the power out of the Sonoff to the lights. Again it is unlikely you will be able to re-purpose the existing wiring to do this.
You could put a Sonoff behind each light switch with minimal rewiring - If a neutral wire is present at the switches.
Unfortunately it won’t fit in my light box. I live in the netherlands and the switchboxes are small and round
But, I found the shelly 1, which would be just the way to go (I guess)
It don’t need rewiring, it works with tasmota and it’s as large as a 2 euro coin.
At least I guess it won’t need rewiring as of the graph shown it looks like I just add a cable bundle thingy.
Hookup the L wire to L, I and O.
The N to N and the switch directly to the SW port. seems legit and rated for 16Amps
I’m not sure about the Netherlands but here (Australia) we rarely have neutral brought down to the switch. Hopefully your wiring code is different. Good luck.
Our wires are rated N and L so I guess that will work.
I had to do a proposal to the wife since those creatures normally don’t like housemodding that much