230V latching relay control

[noospy]

Hello everybody, I'm new in the Domoticz world and I need a little help in finding the right hardware for what I want to achieve.

I'd like to be able to control my living room light through Domoticz on a Raspberry Pi. The light is now controlled by a latching relay (Finder model 27), actuated through 3 wall-mounted momentary switches. The cable scheme is below. I'd like my Raspberry to act as a fourth switch.

So 2 questions:
1) Will I be able to use a relay board and make it act like a fourth momentary switch? With this solution, anyway, I wouldn't be able to let Domoticz know the present state of the switch;

2) Is there any way I can keep this setup (or maybe substitute the latching relay) and be able to visualize the state of the relay on Domoticz?

Thanks in advance (and sorry for my poor technical english )

Dario

Pulsante e rele.GIF (9.64 KiB) Viewed 1320 times

[sion]

There may be a better way to achieve what you want, but one way I can think that this may work, and allow you to keep all your existing lights, relays and switches, could be to use something like this :
https://www.amazon.co.uk/gp/aw/d/B015B3 ... UsSg70%2BL

You would need to do some clever wiring though to keep your relays powered. You would also need another relay before the transmitter switch, as you don't run power into the switch contacts - they are dry only.

[pvm]

You can replace your relay with a Fibaro dimmer. That does support momentary switches, wired up in the same way you can still use the current switches and use domoticz to control (you will need a zwave interface stick)

[noospy]

There may be a better way to achieve what you want, but one way I can think that this may work, and allow you to keep all your existing lights, relays and switches, could be to use something like this :
https://www.amazon.co.uk/gp/aw/d/B015B3 ... UsSg70%2BL

You would need to do some clever wiring though to keep your relays powered. You would also need another relay before the transmitter switch, as you don't run power into the switch contacts - they are dry only.

This looks like an excellent solution for my kitchen where I have just 1 normal switch. One question though: how does this communicate with the Raspberry? thanks for your help!

You can replace your relay with a Fibaro dimmer. That does support momentary switches, wired up in the same way you can still use the current switches and use domoticz to control (you will need a zwave interface stick)

This is probably a definitive solution. It also integrates some other cool functions like soft-start. The downside is cost (I don't have any other z-wave device) but I will probably choose this one. Thanks for your help too!

[sion]

hi noospy,
Sorry, just saw your post. this device works through rf.
So you would need RFXcom, or RF link.