This generator is portable, easy for professional DIY use. Low power consumption, so it will help you to save power. Safe, quiet and efficient. Eliminates odors, and freshens stale air. Large Application: Dryer, dishwasher, refrigerator, electronic shoe cabinet, air purifier and so on. Working Principle: Take advantage of high voltage, use dry air or oxygen in the air as former material to produce . Power Supply: Alternating Current Function: Style: Air Purifier Usage Condition: Household Input Voltage: AC220V Output : 36g/h O3 Gas Feeding: Dry Air or Oxygen Generating : Discharge Cooling : Ambient Air Cooling The actual product may have slight color difference or difference, which will not affect the use Colour:Silver Material:Metal + Plastic Package Contents: 1 x generator Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.