Looks like it uses the Smart Life App so maybe the Tuya Integration ?
Controllable via WiFi and Smart Life App, you can easily control the power, LED lights, and 4 fan speeds with your smartphone. Also, touch control is available and you can press button 3 & B to control the UV light on/off.
Just installed the Tuya integration but could not control the CIARRA CBCS4850 range hood with Home Assistant.
I’ve successfully created all the accounts, installed and connected the app with HA.
But after adding the device no entities are detected. It says just: