Display Instructions; Air Quality Indicator - Xiaomi Smart Air Purifier 4 User Manual

Product Overview

Display Instructions

Temperature
Humidity
Power Button
Mode Switch Button

Air Quality Indicator

The indicator will display green, yellow,
orange or red according to the PM2.5
value.
Green 1-20 μg/m
Yellow 21-35 μg/m
Orange 36-55 μg/m
Red >55 μg/m
025
3
3
3
3
The negative ion function is enabled by default. The purifier can generate
negative ions when it is working, and then the negative air ions (NAI) are
produced through the reaction between the negative electron and the oxygen
molecules. NAI is very good at trapping certain air pollutants.
The function can be enabled or disabled in the app. When it is enabled, the
negative ion indicator is on; when it is disabled, the indicator is off.
PM2.5 Value
Mode
Automatic: Automatically switch modes
according to the indoor air quality.
Sleep: Ultra-low noise for a comfortable
sleeping environment.
Low speed
Medium speed
High speed
Manual: Set and save the coverage
area in the app to adjust the purifying
efficiency.
Wi-Fi Indicator
Negative Ion Indicator
4