... smoke, fume, mildew, etc. Model# HMA-300/CHO Serials Specification:Negative ion + UV light + Tio2 photo catalytic filter + HEPA filter+ Activated ... killing rate can be as high as 97.6%.3,Negative ion combines small dust, disappear smoke and eliminate peculiar smell, ... choose Low, Medium, High levels of ionsDetachable power cord with UL approvalLow power consumption, 41 watt only Packaging: 1pc/box, ...