A contemporary inspiration of design with the most advanced ESP technology All patents protected by ADA Product with UL/GS/CE/RoHS certificate The design inspiration comes from the most contemporary building Bujr Al Arab It is oriented and based on the need of inside space of ESP filter to fulfill a maximum reasonable, compact, and straight structure for the whole unit Patented and innovative electrostatic precipitator (ESP) technology from Sweden enables a filtration efficiency of more than 99% which defeats traditional ESP with only 80% efficiency No ozone released is one of the advantages of the Swedish ESP technology which ensures your safe and delightful home environment With amazingly high CADR of 200, this air purifier wins the highest performance cost ratio on the market With the same CADR rate 200, the other products may be a quite heavy large one, but our 981 is small size and light Washable ESP filter needs no replacement which contributes for cost saving and Eco-friendly The smart usage of six small CPU fans leads to extremely low noise, balanced aeration and high airflow The unit is powered by an adapter of 15V DC, which is for energy saving and flexible use in every country Only 25W to run, very energy saving you can see Extremely low noise level, only 18dBa noise level Operation buttons with speed and timer setting at the top of unit is user-friendly ADA's traditional automatic shut-off function provides a safe operation even by children Activated carbon filter is available for optional