Good one
I am using it and find sturdy and stable in controlling the device via Wi-Fi, still have some recommendations 1. Schedule should include stop start based on dust particles values 2. Sometimes smart option isn’t effective and lower speed mayn’t detect particle and flow is less, instead smart option should vary speed randomly and sense PM and determine purifier speed accordingly, 3. Ability to integrate with Alexa / google home/ apple home 4. Auto start after power failure 5. Power consumption log