====== Xiaomi Air Purifier ======

  * Xiaomi Air Purifier 2C - no WiFi / Smart 
  * Xiaomi Air Purifier 2H 
  * Xiaomi Air Purifier 3H / 3 - higher air flow, lower noise, better PM meter, touch button
  * Xiaomi Air Purifier 2s - button

===== Filters =====
  * HEPA12 - 99,50% efficency
  * HEPA13 - 99,97% efficency

  * Blue - HEPA12 - standard for 2/2S/PRO. 330 g activated charcoal
  * Green - HEPA12 - two filters, external and internal with 330 g activated charcoal
  * Violet - HEPA12 - 330 g activated charcoal
  * Grey/Black - HEPA13 - 330 g activated charcoal