Cheapest pocket socket/plugs that work with SmartThings? (US)

This is an excellent question and one that gets asked about once a month, so you can always check the forum first for questions that you figure will be pretty popular. :sunglasses:

See the following ( The topic title is a clickable link)

And, yeah, right now it’s the IKEA at $9.99 in the US and £9.97 in the UK. :sunglasses:

You might also find the following two topics of interest. The first is the device class features FAQ:

And, the following FAQ on how to lay out your network and repeaters as that can also impact your device selection. Start with post 11 in the following thread, read that, then go up to the top and read the whole thread.