A lot has changed with these even over the last few months. Please feel free to add an entry for anything you are familiar with and know works and indicate whether it is available in the US or the UK and if it requires custom code. Include a link to the topic that has the custom DTH if you know it.
Also, I know some of the zigbee devices have hardcoded groups and so the first one will work great and then if you add another one it will control the same devices as the first one. feel free to add any notes for anything like that.
Zigbee and Zwave devices will require a smartthings hub. Cloud to cloud devices will not. Some devices may require their own bridge or base station in order to communicate with smartthings.
This should all go in the wiki, but I can’t edit tables easily with voice so I don’t work on that page. There is an existing page if anybody wants to add entries there:
https://thingsthataresmart.wiki/index.php?title=Table_of_Button_Devices
Also note that the way buttons are handled by the platform has changed significantly in the last six months, so older code probably won’t work, or might work only with smartlighting but not with other automations. Please only list devices that you are sure work now.
Also, please limit this thread to battery powered devices.
Tagging @prjct92eh2 @jkp @mwav3