[@mmc_milad]

That is a different solution for different purpose. The version I made was to control adapted devices through 3.5mm jacks via Alexa.

The smart plug allows you to control an AC plug through Alexa.
I would be very careful with buying off brands as surprisingly there are many smart plugs on Amazon with no certification or fake stickers.

https://www.goodcheapandfast.com/articles/best-smart-plugs