Aqara Aqara Smart Wall Switch (with Neutral, Double Rocker), Requires Aqara Hub, Remote Control and Timer for Home Automation WS-USC04 - The Home Depot
Thinkbee Wireless Switch Light Dimmer Kit No Battery Remote Control Dimmable Light Switch Self-Powered On/Off Switch for House LED Lamp Fixture - - Amazon.com
2.4ghz Eu Zigbee Smart Rotary/touch Light Dimmer Switch Smart Life/tuya App Remote Control Works With Alexa Google Assistants - Smart Home Control - AliExpress
It looks as though the Aqara Rotary dimmer and high precision motion (body) sensor are available to buy in China now. (Photo credit: 李好) : r/Aqara
The Wemo Smart Dimmer - The First Dimmer Switch with Thread - YouTube