16
OPERATION
PM Indicator Display
1. Press the
Indicator
button to check the density of PM10/PM2.5/PM1.0.
• Pressing the button repeatedly toggles through to check the density of PM10 → PM2.5 →
PM1.0 in turn. The selected density displays for 10 seconds before the display reverts to the
highest measured PM (particulate matter) level.
2. Check the dust particle size LED indicators.
• PM density is displayed based on the dust density result with the highest contamination level.
For example, if PM10 density is 100 (Moderate), PM2.5 is 80 (Unhealthy), and PM1.0 is 30
(Good), the value for PM2.5 is displayed for PM density.
Understanding Overall Air Quality
Overall indoor air quality is displayed as one of six colors depending on the contamination
level of PM10, PM2.5, PM1.0, and odors.
(Dirty) Violet → Pink → Red → Orange → Yellow → Green (Clean)
• The color that the air quality indicator light displays is based on the worst level among PM10,
PM2.5, PM1.0, and odor.
Indoor Air Quality Levels
Overall Air
Quality
State
PM density (μg/m
³
)
Odor Level
PM10
PM2.5
PM1.0
State
Level
Violet
Severe
421 or more
251 or more
-
Pink
Very Poor
351 — 420
151 — 250
Red
Poor
251 — 350
116 — 150
Very strong
4
Orange
Unhealthy
151 — 250
76 — 115
Strong
3
Yellow
Moderate
51 — 150
36 — 75
Normal
2
Green
Good
50 or less
35 or less
Weak
1
PM density ranges from 8 to 999 in increments of 1. PM density values follow the data sheets
provided by the sensor supplier.
