Hi all–I am looking for a 220V smart plug that will work with my wall mounted air conditioner. Ideally, I would just be able to plug and play rather than hard wiring directly. Ultimately, I would like to turn the plug on and off based on the temperature in my apartment (I have a smart thermometer that hooks up to my smartthings). I have yet to find a smart plug that works with 220V. Has anyone come across this product? I am in the US if that is helpful.
Unfortunately, there are no SmartThings-compatible plug and play devices of this type for that voltage in the US.
There are a number of different hardwired options you can consider, including in the wall micros that fit inside the existing receptacle. But they would require wiring.
Correct me if I’m wrong but doesn’t the older model Aeon Labs switch support up to 240v? I’m in Australia and have three switches running various devices for a few years now with no issues and we run off 240v. I have a US hub v1 so have to use US frequency Z-wave and before you tell me off JD, I know I could be breaking some local laws! 
The one sold in the US is only rated 120 V and 15 A. And it doesn’t have the right kind of plug to plug into a US 220 V outlet, which has a different pin configuration for just that reason.
Unfortunately, in the US there are not any pocket socket of that voltage that will work with SmartThings. ( there is one very old X 10 unit, but getting that to work SmartThings would be a whole separate project and add both cost and complexity.)
I found one solution: https://www.amazon.com/BOSS-220V-WiFi-Smart-Plug/dp/B01MYBMVKC. That’s expensive, in my opinion, so I would love any other recommendations.