... compact, attractive design, take no space. Indoor Negative Ionizer with Filter Installation: Plug in the power socket, If the LED ... offensive odors. YL-100C, fill up the air with negative ion, catch the positive particles, and activate oxygen ... and fungal spores. There is no need to replace filter material at all. To clean the collector, simply ... Carton: 23 / 21 kgs Indoor Negative Ionizer with Filter