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  • All products
  • Particulate matter
  • SEN5x

SEN55

Environmental sensor node for PM, RH/T, VOC, NOx measurements

The SEN5x environmental node is a straightforward, all-in-one sensor solution platform for the accurate measurement of various environmental parameters, such as particulate matter, volatile organic compounds (VOCs), oxidizing gases, such as nitrogen oxides (NOx), as well as humidity & temperature. Thanks to proprietary algorithms, the module enables straightforward integration into various applications. This allows device manufacturers to save valuable project time and personnel resources and focus on their core competencies. End customers receive reliable air quality measurement data based on the SEN5x and benefit from improved air quality to increase health and comfort. On top of that, the SEN55 is compliant with the relevant healthy building standards RESET® and WELL Building Standard™.

 

Please note: Cables are not included. If cables are needed, please have a look at the SEK-SEN5x Evaluation kit. 

See inventoryDistributor listContact sales

Specification

Particulate matter
Mass concentration precision
±10
±10%
Mass concentration range
0 - 1000
0 - 1000μg/m³
Lifetime
> 10
> 10years
Particle size range
PM1.0, PM2.5, PM4 and PM10
PM1.0, PM2.5, PM4 and PM10
Humidity
Typ. relative humidity accuracy
4.5
4.5%RH
Operating relative humidity range
0 - 90
0 - 90%RH
Response time (τ63%)
20
20s
VOC
Sensor output
0-500 VOC Index
0-500 VOC Index
Measurement range
0 - 1000
0 - 1000ppm
Response time (τ63%)
< 10
< 10s
Device-to-device var.
15 - 15
15 - 15% m.v.
Limit of detection
< 0.05 ppm of ethanol equivalents or < 10 % of concentration setpoint, whichever is larger
< 0.05 ppm of ethanol equivalents or < 10 % of concentration setpoint, whichever is larger
Switch-on time
1
1h
On-chip humidity compensation
Yes
Yes
Generic
Supply voltage
4.5
4.5V
Average supply current
63000
63000uA
Max. supply current
110000
110000uA
Operating temperature range [°C]
-10 - 50
-10 - 50°C
Interfaces
I²C
I²C
Size (LxWxH)
52.8 x 43.6 x 22.3
52.8 x 43.6 x 22.3mm
Temperature
Typ. temperature accuracy
0.45
0.45°C
Response time (τ63%)
< 60
< 60s

Downloads

Datasheet SEN5x

01/2022

File

1.3 MB

Datasheet01/2022PDF1.3 MB
Compliance of Sensirion’s VOC Sensors with RESET and WELL

04/2023

File

748.3 KB

Application note04/2023PDF748.3 KB
How can I integrate Sensirion’s VOC and NOx sensors into my air purifier?

04/2022

File

249.8 KB

Application note04/2022PDF249.8 KB
How to read RH/T, VOC, and NOx raw signals

03/2023

File

72.2 KB

Application note03/2023PDF72.2 KB
Is it possible to map the output of a MOX sensor to a norm?

04/2022

File

258.0 KB

Application note04/2022PDF258.0 KB
Sensor specification statement Particulate Matter Sensors

03/2020

File

444.4 KB

Application note03/2020PDF444.4 KB
What are oxidizing gases?

04/2022

File

214.8 KB

Application note04/2022PDF214.8 KB
What are reducing gases?

04/2022

File

332.0 KB

Application note04/2022PDF332.0 KB
What is a metal oxide (MOX) sensor?

04/2022

File

288.2 KB

Application note04/2022PDF288.2 KB
What is Sensirion’s NOx Index?

04/2022

File

341.2 KB

Application note04/2022PDF341.2 KB
What is Sensirion’s VOC Index?

04/2022

File

300.4 KB

Application note04/2022PDF300.4 KB
Engineering guidelines SEN5x

01/2022

File

398.4 KB

Guide01/2022PDF398.4 KB
Handling instructions SEN5x

01/2022

File

112.4 KB

Guide01/2022PDF112.4 KB
Mechanical design and assembly guidelines SEN5x

01/2022

File

791.7 KB

Guide01/2022PDF791.7 KB
Mechanical design-in example SEN5x

01/2022

File

198.5 KB

Guide01/2022PDF198.5 KB
Temperature acceleration (STAR Engine) and compensation instructions SEN5x

01/2022

File

280.6 KB

Guide01/2022PDF280.6 KB
Arduino snippets SEN5x

Link

SoftwareLink
STEP file SEN5x

01/2022

File

9.4 MB

Drawings/CAD01/2022STEP9.4 MB
STEP file SEN5x mechanical design-in example

01/2022

File

206.2 KB

Drawings/CAD01/2022STEP206.2 KB
SEN5x product flyer

03/2022

File

361.0 KB

Flyer03/2022PDF361.0 KB
How can air quality at home be improved?

04/2022

File

260.1 KB

Application note04/2022PDF260.1 KB
How can I make my air purifier smart/efficient?

04/2022

File

215.4 KB

Application note04/2022PDF215.4 KB
Read Mass and Number Concentrations

11/2022

File

175.7 KB

Application note11/2022PDF175.7 KB
Reduced Power Operation SEN5x

08/2022

File

318.0 KB

Application note08/2022PDF318.0 KB
Arduino driver SEN5x

Link

SoftwareLink
Embedded driver SEN5x

Link

SoftwareLink
Raspberry Pi driver SEN5x

Link

SoftwareLink
Raspberry Pi snippets SEN5x

08/2023

Link

Software08/2023Link
REACH and RoHS declaration SPS30, SEN4x, SEN5x, SEN6x

01/2025

File

150.2 KB

Certificate01/2025PDF150.2 KB
Indoor air quality brochure

11/2024

Link

7.7 MB

Flyer11/2024Link7.7 MB
SEN5x product flyer Japanese

03/2023

File

1.3 MB

Flyer03/2023PDF1.3 MB

Sensor evaluation

Buy the following products to evaluate this sensor

NameDescriptionSeriesCategory
SEK-SEN5xEvaluation kit SEN5x seriesSEK-SEN5xParticulate matter

SEK-SEN5x

Evaluation kit SEN5x series

SEK-SEN5x

Particulate matter

Download the respective viewer software to start measuring

Go to download center

Start testing our sensors fast and easy with the evaluation kits

How to get started

Smart sensors for your application

Sensirion's sensor solutions are used in a wide range of applications and markets. Our reliable environmental and flow sensors improve energy efficiency, increase health and ensure safety and comfort.

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