You will need their mini hub for integration with SmartThings. That’s also on sale, at $27.
The buttons are Bluetooth to the mini hub, then the hub is WiFi to the internet and cloud to cloud to ST.
I use these in my own home to retrofit some dumb devices, including a mini blender and the eject button on the DVD player. I wrote a review for this forum in 2020.
These work well with a SmartThings/Aeotec hub in place of their own hub.
Like all Sengled bulbs, these are NOT Zigbee repeaters. They also do not work with a Hue bridge. But this model is still Zigbee and does work with an ST hub.
Only 10% off, but the Sunbeam WiFi mattress pad is now in stock lots of places, including Amazon. $113 with discount for the queen size. Integration with ST through Alexa routines. Voice control via Alexa or Google. Some people report the blanket version is cheapest at Walmart.
We’ve had ours for about a month and really like it. Unlike earlier models from other brands this one WILL let you preheat remotely, although if you set the heat above level 4 (of 10), it will turn itself off after 60 minutes if you don’t confirm by pressing the physical controller. But you can also put it on a schedule. So fully handsfree control and you can turn it on and off from ST by using Alexa routines as an intermediary.
As I noted in the discussion thread, the queen and king size have two zones you can control independently with the app or the physical controller, but Alexa treats it as one zone. Didn’t matter to us, but it will to some people.
I see that, unlike the Levoit I also mentioned, the Meross unit cannot be shipped to California.
Since this is a pretty new device, that most likely means it just hasn’t completely the California certification process yet. Otherwise it would mean it emits too much ozone, but I don’t see anything in the specs that would likely cause that.