Hello guys;
I guess i have this diagram in my house. I want to connect double relay for universal dimmer (so i won’t use the neutral) .
This is a 2-way switch. Will you please tell me how to connect it?
You may have a look here: http://www.vesternet.com/resources/application-notes/apnt-52#.VNn0zOaG8rU
So i only can use the dimmer 
Are you sure that you have Neutral on the switch in the right switchbox or is it Com?
Yes. I have wired this one there.
With Neutral available in the right switchbox, I would take a Fibaro relay switch rather than a dimmer and connect the switch like the dimmer shown in Figure 2 of Vesternets schematic above (APNT-52). Ignore the bridge between N and O and connect Neutral direct with N of the relay switch. Hope it works. I never tried it this way - pls let me know.
The think is that I don’t have Line in the right box. The line is alternative between the tow ports. As a two way switch, the line on the right box depends on the status of the left box.
This is why i was trying to use dimmer on the left size. But as i don’t trust the Fibaro Dimmer that much, i wanted a more reliable solution.
Even though, using the Dimmer might not solve the problem. As the load is connected to the right box
But you have Live in the left switchbox plus two Com wires going to the right switchbox. So simply transmit Live from the left to the right switchbox where you even have Neutral for the relay switch. Have a look to Figure 2 of APNT-52 where you can see how to connect everything.
Pictures say more than words. I guess you will need to be able to make the switches momentary for this to work right?
I dont think with this connecting the switches will be 2way switches any more
In parameters of the dimmer you can change the type of switch and the type of load to ON/OFF
However, I can use the double switch with your graph but i might loose the 2way feature
Okay, here is the schematic of that what I have in mind…
Seems like the functionality of the S2 input on the Dimmer module works differently from the S2 input on the Relay module so I guess your right then since he wanted to use a relay module.
So you believe this will keep the 2way feature of both switches on the right and the left one?
It should, find it out and let us know…
Ok will try it
Hope it works 
SPECIAL THANX
Any update, does it work?
Sorry for the late reply
Nope i didnt
as i have only double relay
What i have now is this
I thought this will work but actually it didnt
[quote=“Kullematz”]Simply use only one switch of the FGS221 like the attached schematic and see if it works.
Don’t forget to set parameter 14 to 1.[/quote]
You will only get two-way switching with that configuration if you use momentary switches and set parameters 13 and 14 to 0.
If you want two-way switching with toggle-switches and the cables that you have in place, you would need to use the Fibaro FGD-211 Dimmer. This has a special mode for this purpose.
I will use the Dimmer as ON/OFF switch then?