At first you need to plug in the machine, then adjust the timer machine will start working. For example, if your room measures 20 square meters, set the timer with 10-20 minutes, that's fine, if your room is larger adjust the timer with more minutes accordingly. During the work of the machine, animals or humans should not stay in your room. When the machine has finished working, ventilate the room for 30-40 minutes. Features: -Applied to tumble dryers, dishwashers, refrigerators, electronic shoe cabinets, air purifiers, etc. -This ozone generator is portable, easy to use for professional DIY. -Low energy consumption, so it will help you save energy. -Safe, quiet and efficient. -Take advantage of the high voltage, use dry air or oxygen in the air as a base material to produce ozone. -Eliminate odors and refresh stale air. -The cooling fan with fine heat dissipation can extend the life of this machine. -The non-slip pad is wear and impact resistant. -The handle with exquisite workmanship and fine durability is convenient to carry. Specifications: Style: Air Purifier. Ozone production: 10g/h, 20g/h, 28g/h, 32g/h, 36g/h. Installation: Portable. Anion density: no lonizer. Wind speed: Standard. Product: 220V ozone generator. Voltage: 220V. Power: 110W. Cooling mode: air cooling. Cable length: 1280mm. Air volume: 50㎡/ H. Application area: <61㎡. Noise: ≤ 30dB. Function: Formaldehyde Remove. Oxygen supply: below 1L / min. Size: 20x14x14cm/7.87x5.51x5.51'. Color: Blue. Plug: EU. Package Included: 1 x Air Purifier Ozone Generator