Built-in plugins and light switches

First we need to ask a couple of questions.

What country are you in? The device selection does vary somewhat.

What model of the smartthings hub are you using? There are a few devices that don’t work with the older models.

What do you mean by “built in plug-ins“? Plug-in is usually refers to a self-contained “pocket socket“ that you can plug into an existing receptacle. Are you talking about replacing the in wall receptacle?

Plug in

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in wall Receptacle

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Meanwhile, you might want to take a look at the device class features FAQ ( The topic title is a clickable link)