They can be used with SmartThings directly, however there are a few things to be aware of:
-
You have to install a custom device handler (DTH).
Please see this thread for information and links to the most up-to-date device handers. You want the device handler for the Aqara Temperature Humidity Sensor, based on your LightInTheBox.com link. -
The older SmartThings “classic” mobile app should be used with Xiaomi / Aqara devices
Devices that use custom device handlers are not yet officially supported for use with the new SmartThings Samsung Connect mobile app. -
Most non-battery powered ZigBee devices aren’t “friendly” with Xiaomi / Aqara devices
Most ZigBee devices that are mains-powered (plugged into a wall socket) also function as ZigBee “repeaters”, which is similar to the what WiFi extenders do. Unfortunately, because Xiaomi / Aqara devices use ZigBee in a non-standard way, they will be dropped off the network by the majority of repeaters. So you would want to check whether you have any mains-powered ZigBee devices. Please see this thread for more information, and also this post on the Hubitat Hub forums which lists ZigBee repeater devices which are known to be compatible.
If you find that you already have “incompatible” ZigBee repeater devices, or you are unable to use the SmartThings “classic” mobile app, then there is a SmartThings solution called Mi Connector that allows integration of devices connected directly to a Xiaomi Gateway.