AJAX 2 way dimmer wiring

[WaytoGo]

I'd like to replace the existing top and bottom landing switches for a set of AJAX 2-way smart dimmers.
Before I splash out, I thought its best to understand if these dimmers are compatible with the existing wiring.
The lighting circuit is wired in the 2 plate method with neutrals available at the switches and a 3-core cable between the two.
The issue I'm having is the manufacturers wiring diagram does not seem to represent the wiring arrangement I have.

Manfacturers wiring diagram:


I envisaged with my wiring topology that it would resemble something closer to this:
(Bear with me, Its messy but I don't do this for a living or have the proper software)



I contacted thier technical support but they weren't much help and responded with a blanket statement, referring me back to their diagram. Being a European company (Ukraine) I imagine its a case of not understanding alternative UK wiring methods and so am seeking advice here. The reason I believe this is because their diagram would appear to be adequate for a property wired in singles as John Ward describes HERE (6:01 - 9:46). Later in the video he goes on to show 3-core wiring between 2-way switches as I've attempted to demonstrate above.

Could anyone advise if these 2-way switches will function if wired as I've shown or have I made a complete hash of it?

Best Regards

 

[WaytoGo]

Correction: These are 2-way smart switches, not dimmers! Any advice is highly appreciated.

 

[WaytoGo]

I think I've found a way to use the existing cables to adhere to the manufacturers diagram. Would this work?

 

[westward10]

Yes your second plan seems fine.

 

[WaytoGo]

Yes your second plan seems fine.

Many thanks for the prompt response.
My only issue now seems how to fit all the bloody cables and 3 wagos in the backbox!

 

[westward10]

Are you using the 221s?
How deep is the back box?

 

[WaytoGo]

Are you using the 221s?
How deep is the back box?

Yes the intension was to use the 221s in the 47mm backbox.
The switch itself is 25mm in depth and cables are all 1.5mm2.


If space does become an issue I think my only option would be to use spacers behind the switch but this would look shody.

 

[westward10]

They should fit with plenty of space, 47mm is unusual for a light switch back box they are normally shallower.

 

[WaytoGo]

They should fit with plenty of space, 47mm is unusual for a light switch back box they are normally shallower.

Thanks for your feedback. Its reassuring to know your experience suggests space won't be an issue.
I requested 47mm backboxes for switches when the house was rewired to future proof for smart lighting controls; deep switches/dimmers, relays etc.

I'm now on the journey of finding the best smart switches/dimmers on the market but hit another wall there.
It seems the options are limited when it comes to smart 2-way dimming.
Varilight and hamilton do offer 2-way master/companion dimmers but thier apps are limited in features and furthermore cannot be integrated with automation software like home assistant. This prevents users from creating bespoke automations using multiple sensors/controls around the house. Any recommendations?