Tired of pollution, tobacco odors, in particular, and other smells! So do not hesitate! An excellent product that detects and cleans all fully automatically and the room where it is installed. You can also force the power filter manually if pressed. For my part, the product is installed in a studio of 33 square meters, to my delight! Visitors smoking? The problem is solved in minutes! In short, great product that I recommend to all!