The SmartAir 4-Pack is 4x SmartAir's together.

This is ideal for those who have multiple small to medium sized rooms.

Sync up all the units to your wifi and monitor the air in multiple rooms at once.

Place each one on auto mode and let SmartAir do the work.

Creating a uniform environment of clean air, removing dust and allergens, destroying germs, viruses, and ensuring only clean air is being breathed.

Product link: SmartAir