Help with understanding my light switch wiring


Novice Member
Hi - I am looking for some advice and help with the installation of a smart light switch.
Firstly I would like some help in understanding the wiring set up I have on the switch to replace.
I live in a new house so I expected the wiring to be good and easy to follow but....
In the pictures you can see its a simple on/off switch to one light, there is one live wire to com and 2 live wires to L1. Neutral wires are joined in a block.

Q1: What sort of smart switch do I need? With or without netrual?
Q2: How do I then wire it to the new smart swicth?

Any advice and help would be really appreciated


2021-12-30 17.33.56.jpg

Seb Briggs

Distinguished Member
That looks just wrong

Live (line) should be brown (no extra sleeve) and wired into Com
Switched live (line) is normally blue with a brown sleeve

Get a tester and see which wire goes live when the switch is activated, and which is permanently live

However I'd get a friendly electrician to check the wiring generally if a new house


Distinguished Member
Obviously the apprentice was let loose on that one...

In general, the live input to the smart switch will be the 2 brown wires twisted together and the single wire the output. You don't need to switch the neutral, just add a wire to provide a neutral to the smart switch if required.

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