Trying to install TCP wifi switch.

[brianmoooore]

The blue wire to the right of your pic (which should have a brown sleeve on it!) is part of the cable which should be the other end of the one in the switch.
Replace this with 3&E, using the grey (with short blue sleeves at each end) for the neutral, the brown replacing the existing brown, and the black (with a short brown sleeve at each end) to replace the existing blue.

 

[stevem28]

Hi. Hope its OK to ask as I have just got the same switch but I need to know which wire goes where as I have a black wire a grey wire and a brown wire which is confusing

 

[Taylortwocities]

Hi. Hope its OK to ask as I have just got the same switch but I need to know which wire goes where as I have a black wire a grey wire and a brown wire which is confusing

Which wire went to which terminal on the existing switch?

 

[brianmoooore]

Was this switch one half of a two way switch arrangement?