TOPINCN Scent Air Machine, Smart HVAC Aromatherapy Diffuser with App Control, 800ML Cover Up to 4000 Sq.Ft, Waterless Essential Oil Diffuser for Home, Office, Large Room (US Plug

[Wide Coverage] With an upgraded 800ml oil bottle, this waterless diffuser covers up to 4000 sq.ft area while ensuring continuous and long-lasting fragrance for entire space, especially suitable for large room.
[HVAC Connection] This essential oil diffuser for home is equipped with HVAC attachments that can connect to hvac system for spa-like aromatherapy experience, office, spa, or commercial space.
[Smart Control] You can control the smart scent diffusers using your smartphone or tablet, schedule automatic shut offs and set timers when you're away, or adjust fragrance intensity remotely to your needs.
[Customizable Fragance] The diffuser provide a variety of scented essential oils to choose from, you can flexibly change the fragrance according to different occasions and times, creating different themes and atmospheres.
[Energy Efficient and Low Noise] This scent diffuser utilizes enhanced fragrance spraying tech for long-lasting scent with reduced energy consumption. It runs at only 40db without noise disturbing, creating a relaxing and smooth ambience.