The attributes that are due to consider when choosing a bell for the kitchen must go beyond the physical model of the product, is only very frequent the client to only base their election on this last one and this is a serious error, although they give to our kitchens a distinction touch and elegance is necessary to consider at least the following points basic to assure to us to realise a good investment: It is necessary to firstly consider the engine power of the bell because this was reflected in the extraction power, a power superior to the 600m3/hora will be but that sufficient. The noise, is very annoying to acquire a bell that generates much noise, is necessary to decide to us that in a healthy atmosphere it will be due to look for to eat with the minus noise possible to make our moment pleasant. It is necessary to review or if one is going away to use like extractor or purifier since these are totally different things, some bells only come optimized for a single from these operations. The type of keyboard, some bells for kitchen use electromechanical bellboys (type push) that they already estan average old-fashioned, the present thing is the digitalis, eye with this. To check that they bring " Timer" or programmer of extinguished automatic, this function avoids having to us to stop of the table to extinguish the bell to us, this function offers to comfort and sophistication us that makes see us better including with our guests. The type and calibrates of the stainless steel, we must pay attention well for example in which it is of a good caliber so that long time lasts to us, some seem that they estan done of paper so to speak and the brightness of the metal is very little. That type of filter has, normally they take one of aluminum and another one of activated charcoal, this I complete is of the best thing to eliminate the bad scents since they are catched and dispersed there same offering pure and pleasant air again to the environment. .