Why can't I get this working properly?

Hi All

First post so go easy on me. Unfortunately it's a repetitive question regarding 2 way lighting.

I watched a video on you tube from "Home Sight" regarding how to set up using traditional UK wiring (No Neutral at Switch). I am attempting to wire at the ceiling rose, utilising the available neutral. I have basically wired it as per his diagram attached, with the following amendments:

1. No Bypass as I don't believe it's required if I have a neutral available

2. The live to the light is wired directly to "O" on the shelly

3. The supply Neutral is wired into "N" on the Shelly

The problem I am having is that when the far switch is in 1 position, the first switch works, but when I go to change it, the first switch stops working. The Shelly always works as it should.

What am I missing? It's been driving me up all wall all evening.

Cheers

Hi

I was 100% certain, but went to check anyway. It was 100% as per the diagram, however one of the switches is an outdoor switch with a small neon power indication light that ran between com and L2. This was throwing everything off. As soon as I took the light out of the mix, everything worked as it should.

Have attached a picture of the type of switch just incase anyone else has an oversight like mine.

Cheers 👍👍

Agreed!

Thanks for your support