That sensor would be similar to our Rd-03D mmWave Multi-Human Position Sensor | Buy in Australia | CE10172 | Core Electronics that was featured in this write up Detect and Track Humans with mmWave Radar on an Arduino.
There is definitely a good chance that it’s possible, but as @James46717 mentioned you will need something to interpret the UART signal into a digestible input for HA.
We haven’t had a chance to see if it will work or not, and there is limited info available for doing so online. I would say your best bet will be to use an LLM such as chatgpt and run some tests with it.
