AROVEC Smart Plus True HEPA Air Purifier, AV-P500S [Smart Air Purifier with Straightforward Use] Australian owned brand, high grade H13 True HEPA filter having smart air quality sensor & auto-mode operation option, rapid air purification with certified high CADR number which cleans the air 55 times daily for large areas up to 50m2 while super energy-efficient and cost-saving.[ Exclusive Multi-Feature Design & Ultra-Quiet Operation] Choose zero light sleep-mode for no disturbance at night or keep night light ON, auto-purification mode, timer, air quality sensor & indicator, large air intake, brushless Japan DC motor with ultra cost-saving, sleek design & easy to move and displace.[ Effective for Asthma, Allergies, Hay Fever Sufferers] Large size upgraded multi-stage filtration system confirmed to remove 99.97% of airborne pollutants and irritants (i.e., allergens, dust, pollen, viruses, bacteria, odours, pet dander, smokes, cooking smell & VOCs with 100% ozone free safe operation for improving air quality in your room) as small as 0.3 microns (smaller than PM2.5), brings pleasure to feel better breathe of air with easy and affordable filter replacement feature.[ Powerful Motor & Still Energy Saving] Quite strong & speedy brushless DC motor features high performance, long lifetime and delivers ultra-quiet operation with exceptional energy efficiency. If the air quality indicator remains red despite having clean air and clean filter installed, simply reset the sensor by pressing the Timer button for 3-5 seconds.[