It has some indicators like "low pollution," "moderate pollution," and "high pollution."
It is an innovative design, especially for allergy-sensitive people.
As its name suggests, the Xiaomi Smart Air Purifier 4 Compact is designed to be small. It has a three-in-one filter that can capture particles as small as 0.3 microns.
It can trap any particles as small as 0.3 microns and can eliminate indoor air pollutants layer-by-layer. It supports voice control, remote control, and 3-in-1 filtration for purification.
It has a built-in smart home app by which you can control it via your phone and see the relevant measurements.
Energy use might result in increased electricity costs.
It's one of the most interesting Xiaomi products, and it's worth a try. If you haven't tried this great air purifier, you missed it