2 way switch 3 core to new switch

[Gavin-uk]

Hi guys and thanks for looking and hopefully helping me out on my first post

I have a up and down light switch
One witch 5 cables and the other with 3
Up has a cable with black and red earth
And a second cable red , blue , yellow

Downstairs switch
Has red, blue and yellow

Now I’m sue my main switch is the one upstairs with the most cables
If I disconnect the red blue and yellow cable the switch downstairs don’t work which is what I thought would happen
Now let’s get to my problem I have just got a

Aurora AU-A1ZB2WDM2P for downstairs the switch on the left is going to be a ( Slave )

And a Aurora AU-A1ZB2WDM1P for upstairs ( Master )

Each one only has two terminals a com and a live And a switch to set master and slave for the life of me I can’t figure out how to wire this up

Light switch upstairs

Upstairs switch

99422099-1C14-4397-98AC-AF0993589AD3.jpeg (344.97 KiB) Viewed 869 times

Light switch downstairs wires in the ring is part of the 2 way

Downstairs switch it’s the side in the orange ring

535C532F-E78D-4799-9E47-F21BE1AAC21B.jpeg (258.75 KiB) Viewed 869 times

New switch

D728676E-5463-4C90-804E-9EAA8509E9F1.png (177.13 KiB) Viewed 869 times

[Someone-Else]

You connect it as the diagram says that you should.
Your thinking about the upstairs one is also correct
So with that in mind get the upstairs one to work first (Imagine there is no 3 core and earth to downstairs)
Obviously you do this with the electricity off.

One question.
Your down stairs switch is 2 gang, How will you change the left one and not the right one? You can't you have to change them both, even though you don't want to.
Also you have to be careful what lamps you use as not all are compatible with that dimmer