There is now an official integration with smartthings and Lutron Caseta. These are wired switches that do not require a neutral. However, you will need the Lutron smartbridge as this is a cloud to cloud integration.
Thereās also a Leviton zigbee wall switch which does not require a neutral and is on the official āworks for SmartThingsā compatibility list, but I havenāt heard of anybody actually using one and itās an expensive switch, around $85 each. But it is another option and it doesnāt require an additional bridge device.
If you were looking for a battery powered switch to communicate with a smart bulb or a micro relay at the ceiling fixture or to create a virtual three-way with another smart switch, see the following:
So there are now several different ways to address the issue of a switch box that doesnāt have a neutral.
However, you will need the Lutron smartbridge as this is a cloud to cloud integration.