The Air Doctor 5500 Air Purifier is a powerful and efficient white plug-in unit that provides clean air delivery with a CADR rating of 551-600. It features True HEPA filtration technology and ultrasonic humidification to effectively purify the air in any room with more than 215 sq ft of coverage. With smart home compatibility and a glossy finish, this floor-mounted unit also includes a dust sensor and filter life monitor for added convenience. Operating at 120V, the Air Doctor 5500 is a reliable solution for improving indoor air quality.