Philips AC4091 is a user-friendly air quality sensor that combines accurate monitoring with an elegant design. Thanks to its advanced technology, it can detect a wide range of pollutants, including PM2.5, PM10, and formaldehyde, providing you with real-time air quality information. With its smart sensing capabilities and a variety of features such as auto mode, healthy air protect alert, and healthy air protect lock, it helps you maintain a healthier indoor environment.
Philips AC4091 is a user-friendly air quality sensor that combines accurate monitoring with an elegant design. Thanks to its advanced technology, it can detect a wide range of pollutants, including PM2.5, PM10, and formaldehyde, providing you with real-time air quality information. With its smart sensing capabilities and a variety of features such as auto mode, healthy air protect alert, and healthy air protect lock, it helps you maintain a healthier indoor environment.
A
C4091
Register your product and get support at
www.philips.com/welcome
Us
er man
u
a
l
3
3EN
Contents
1 Important 4
y
4
5
What’s in the box
x
5
3 Get started 6
6
8
8
8
8
8
9
9
1
0
10
10
11
1
1
13
14
16
16
18
18
9 Troubleshooting 19
10 Guarantee and service 20
20
11 Notices 21
21
21
21
English
4 EN
Caution
1 Important
Danger
Warning
5EN
What’s in the box
Warranty
4
Quick start guide
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AC4016
Register your product and get support at
www.philips.com/welcome
English
3
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19
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33
Air
q
ualit
y
sensor
(
AC4187
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4
English
6 EN
3
4
5
2
3 Get started
Tip
Note
1
2
1
2
7EN
6
2
1
2
Note
7
2
1
English
8 EN
Understand the healthy air
protect alert
p
rotect alert combination
Follow this
and
and
Understand the healthy air
protect lock
a
n
d
the
»
»
Note
4 Use the air
Understand the air quality
light
ligh
t
Air quality level
Re
d
bad
Note
Understand the auto mode
9EN
quality sensor
sensitiv
e
Note
1
2
»
F
an spee
d
l
ig
h
t
S
ensitivity level
sensitiv
e
1
»
2
»
»
3
English
10 EN
Auto
Manual
1
,
,
,
Tip
3
»
O
ne of the
,
,
4
an
d
Note
11EN
Set the timer
S
ituations You will see
C
hoose a fan
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ne of the
,
the
,
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ne of the
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o
n
e
of
t
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e
,
Th
e
the
,
1
Silent mode
1
»
Th
e
English
12 EN
2
»
Th
e
,
3
,
13EN
5 Clean your air
Note
1
2
English
14 EN
2
1
2
3
1
2
4
5
6
2
1
2
6 Clean the pre-
Note
and
1
15EN
7
2
1
and
Note
English
16 EN
Note
1
2
3
1
2
4
1
2
7 Replace the
Note
Replace the Formaldehyde
Note
Tip
17EN
8
2
1
2
Note
9
2
1
1
0
5
2
6
7
2
English
18 EN
3
4
Note
Reset the Formaldehyde
counter
1
2
19EN
Pr
ob
lem P
oss
i
b
le
so
l
ut
i
o
n
a
l
wa
y
s sta
y
s
I
nee
d
I
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ave an
t
h
at
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nee
d
9 Troubleshooting
Proble
m
Possible solutio
n
been on
The fan
w
h
en t
h
e
has been
English
20 EN
10 Guarantee and
service
Order parts or accessories
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Philips AC4091 is a user-friendly air quality sensor that combines accurate monitoring with an elegant design. Thanks to its advanced technology, it can detect a wide range of pollutants, including PM2.5, PM10, and formaldehyde, providing you with real-time air quality information. With its smart sensing capabilities and a variety of features such as auto mode, healthy air protect alert, and healthy air protect lock, it helps you maintain a healthier indoor environment.
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