(Help) I need a smart switch that can be used manually (UK)

yes it should.

Here is a copy of the text from their websight.

2-Way or Momentary Switch Wiring Schematic Without Live Wiring: Attaching a 2-way switch or a momentary switch is very simple. Just connect 2 wires to the 2-way or momentary switch then connect the 2 wires (doesn’t matter which way) to the 2 terminals next to the 3V terminal.

I am using regular 3 way switches in my micro switch setup.

So we’re you successful?

been so busy just got back from my honeymoon.

I also bought fibaro FGS-223

and no it did not work I still cannot give it constant power hehe

should I replace it with the fibaro ?