Hi Tapo. Just connected my H100 to HomeKit via matter and hooked up a window sensor (T110) and water leak detector (t300). 
 

The T110 is visible in Honekit, the T300 is not. I believe there was a matter update last year that added support for water leak detectors. Will the t300 be matter compliant and be visible in HomeKit? 
 

thanks. 
-msilano