Home Appliances Design Beval Air Purifier by Sun Max Tech Limited Beval is a compact air purifier designed for use in small rooms. Beval is smaller than other purifiers with the same specification, so the device can be moved easily and shared between rooms. Four sensors detect ozone, PM2.5, PM1.0 and volatile organic compounds. The filter element removes dust and suppresses bacteria and viruses, and three built-in ultraviolet lights treat the air again. An artificial intelligence function measures filter consumption to estimate a realistic replacement time. The housing is made of ABS.