... and motor,installation board,TiO2 photo-catalyst,UV,baffe,Nano frame,dust sensor Product Parameter:Voltage: 120VFrequency: 60 HZPower: ... display function after switch off.Structural representation:1. Front panel 2. Pre-filter3. Electrostatic Precipitator 4. Air passagel 5 ... 16. Baffle17. Activated carbon 18. Air outlet grille19. Nano frame 20. Circuit board21. Front cover 22. Control board23. Display ...