... , take no space. Indoor Negative Ionizer with Filter Installation: Plug in the power socket, If the LED light is on, it ... dust, kill bacteria. 2. Cordless plug, compact, attractive design, take no space. 3. Built in a dust collector, convenient for cleaning ... electrostatic stainless steel dust collector absorbs microscopic contaminants and allergens in the air such as dust, pollen, fuzz and fungal ...