During operation, you should not enter the room because ozone produced. Also one takes a chlorine smell true. After using the device you should ventilate the room first.
What is recommended as is the use of a timer so that the unit does not pass through 24 (redirect = true & ref_ = oh_aui_detailpage_o05_s00)
The unit is now working for about 2 months flawlessly and provides really fresh air. However, the room size should not exceed 50 cm, as indicated 100m² with heavy air pollution, such as, are too much for the small device by cigarette smoke.
Positives:
+ Cleaning the air to 30 cm² appropriate (cigarette odor after 4-5 hours completely removed)
+ Price / performance unbeatable
+ Very small dimensions
+ Simple cleaning of the metal plates (simply pull the head of the unit out and clean with a damp cloth)
+ Low noise (in Turbo mode bit louder than ticking of a wall clock)
+ Low Power Consumption (Maximum power: 6W)
Those looking is cigarette smell from his rooms to get rid of, which makes this unit a wrong purchase. One should not expect miracles at the price, however.