Smart switch installation

[The newbie of technology]

Hi, I’m new here and not so much of knowledge in wiring.
I’m trying to replace my old 3 gang switch to a 3 gang WiFi smart switch for my smart home.
I’m not sure which wire is the right one to connect to.
I’ve attached the original wiring from the old switch and the new smart switch.
Hope you guys can enlighten me.

 

[telectrix]

no neutral in switch. that's the problem.

 

[The newbie of technology]

no neutral in switch. that's the problem.

The seller told me that it’s okay to use it for single fire line by just applying a capacitor to the L1

wire diagram as per attached. Hut I do not know how to wire them into the smart switch.

 

[Strima]

I would advise returning to the seller and get a unit the doesn't require a neutral or a capacitor adding to the the circuit. Have they made any mention of capacitor rating etc?

 

[The newbie of technology]

This is the capacitor info.