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NRND

SEN55

  • All products
  • •Particulate matter sensors
  • •SEN5x

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. 

Successor productSee inventoryDistributor listContact sales

Successor product

NameDescriptionSeriesCategory
SEN65Sensing platform for PM, RH/T, VOC and NOx measurementsSEN6xParticulate matter sensors

SEN65

Sensing platform for PM, RH/T, VOC and NOx measurements

SEN6x

Particulate matter sensors

Specification

Particulate matter
Mass concentration precision±10%±10%
Mass concentration range0 - 1000μg/m³0 - 1000μg/m³
Lifetime> 10years> 10years
Particle size rangePM1.0, PM2.5, PM4 and PM10PM1.0, PM2.5, PM4 and PM10
Humidity

Downloads

Datasheet SEN5x
  • 01/2022•
  • PDF•
  • 1.3 MB
DatasheetDownload Datasheet SEN5x01/2022Download Datasheet SEN5xPDFDownload Datasheet SEN5x1.3 MBDownload Datasheet SEN5x
Compliance of Sensirion’s VOC Sensors with RESET and WELL
  • 04/2023•
  • PDF•
  • 748.3 KB
Application noteDownload Compliance of Sensirion’s VOC Sensors with RESET and WELL04/2023Download Compliance of Sensirion’s VOC Sensors with RESET and WELLPDFDownload Compliance of Sensirion’s VOC Sensors with RESET and WELL748.3 KBDownload Compliance of Sensirion’s VOC Sensors with RESET and WELL
How can I integrate Sensirion’s VOC and NOx sensors into my air purifier?
  • 04/2022•
  • PDF•
  • 249.8 KB
Application noteDownload How can I integrate Sensirion’s VOC and NOx sensors into my air purifier?04/2022Download How can I integrate Sensirion’s VOC and NOx sensors into my air purifier?PDFDownload How can I integrate Sensirion’s VOC and NOx sensors into my air purifier?249.8 KBDownload How can I integrate Sensirion’s VOC and NOx sensors into my air purifier?
How to read RH/T, VOC, and NOx raw signals
  • 03/2023•
  • PDF•
  • 72.2 KB
Application noteDownload How to read RH/T, VOC, and NOx raw signals03/2023Download How to read RH/T, VOC, and NOx raw signalsPDFDownload How to read RH/T, VOC, and NOx raw signals72.2 KBDownload How to read RH/T, VOC, and NOx raw signals
Is it possible to map the output of a MOX sensor to a norm?
  • 04/2022•
  • PDF•
  • 258.0 KB
Application noteDownload Is it possible to map the output of a MOX sensor to a norm?04/2022Download Is it possible to map the output of a MOX sensor to a norm?PDFDownload Is it possible to map the output of a MOX sensor to a norm?258.0 KBDownload Is it possible to map the output of a MOX sensor to a norm?
Sensor specification statement Particulate Matter Sensors
  • 03/2020•
  • PDF•
  • 444.4 KB
Application noteDownload Sensor specification statement Particulate Matter Sensors03/2020Download Sensor specification statement Particulate Matter SensorsPDFDownload Sensor specification statement Particulate Matter Sensors444.4 KBDownload Sensor specification statement Particulate Matter Sensors
What are oxidizing gases?
  • 04/2022•
  • PDF•
  • 214.8 KB
Application noteDownload What are oxidizing gases?04/2022Download What are oxidizing gases?PDFDownload What are oxidizing gases?214.8 KBDownload What are oxidizing gases?
What are reducing gases?
  • 04/2022•
  • PDF•
  • 332.0 KB
Application noteDownload What are reducing gases?04/2022Download What are reducing gases?PDFDownload What are reducing gases?332.0 KBDownload What are reducing gases?
What is a metal oxide (MOX) sensor?
  • 04/2022•
  • PDF•
  • 288.2 KB
Application noteDownload What is a metal oxide (MOX) sensor?04/2022Download What is a metal oxide (MOX) sensor?PDFDownload What is a metal oxide (MOX) sensor?288.2 KBDownload What is a metal oxide (MOX) sensor?
What is Sensirion’s NOx Index?
  • 04/2022•
  • PDF•
  • 341.2 KB
Application noteDownload What is Sensirion’s NOx Index?04/2022Download What is Sensirion’s NOx Index?PDFDownload What is Sensirion’s NOx Index?341.2 KBDownload What is Sensirion’s NOx Index?
What is Sensirion’s VOC Index?
  • 04/2022•
  • PDF•
  • 300.4 KB
Application noteDownload What is Sensirion’s VOC Index?04/2022Download What is Sensirion’s VOC Index?PDFDownload What is Sensirion’s VOC Index?300.4 KBDownload What is Sensirion’s VOC Index?
Engineering guidelines SEN5x
  • 01/2022•
  • PDF•
  • 398.4 KB
GuideDownload Engineering guidelines SEN5x01/2022Download Engineering guidelines SEN5xPDFDownload Engineering guidelines SEN5x398.4 KBDownload Engineering guidelines SEN5x
Handling instructions SEN5x
  • 01/2022•
  • PDF•
  • 112.4 KB
GuideDownload Handling instructions SEN5x01/2022Download Handling instructions SEN5xPDFDownload Handling instructions SEN5x112.4 KBDownload Handling instructions SEN5x
Mechanical design and assembly guidelines SEN5x
  • 01/2022•
  • PDF•
  • 791.7 KB
GuideDownload Mechanical design and assembly guidelines SEN5x01/2022Download Mechanical design and assembly guidelines SEN5xPDFDownload Mechanical design and assembly guidelines SEN5x791.7 KBDownload Mechanical design and assembly guidelines SEN5x
Mechanical design-in example SEN5x
  • 01/2022•
  • PDF•
  • 198.5 KB
GuideDownload Mechanical design-in example SEN5x01/2022Download Mechanical design-in example SEN5xPDFDownload Mechanical design-in example SEN5x198.5 KBDownload Mechanical design-in example SEN5x
Temperature acceleration (STAR Engine) and compensation instructions SEN5x
  • 01/2022•
  • PDF•
  • 280.6 KB
GuideDownload Temperature acceleration (STAR Engine) and compensation instructions SEN5x01/2022Download Temperature acceleration (STAR Engine) and compensation instructions SEN5xPDFDownload Temperature acceleration (STAR Engine) and compensation instructions SEN5x280.6 KBDownload Temperature acceleration (STAR Engine) and compensation instructions SEN5x
Arduino snippets SEN5x
  • Link•
SoftwareDownload Arduino snippets SEN5xDownload Arduino snippets SEN5xLinkDownload Arduino snippets SEN5xDownload Arduino snippets SEN5x
STEP file SEN5x
  • 01/2022•
  • STEP•
  • 9.4 MB
Drawings/CADDownload STEP file SEN5x01/2022Download STEP file SEN5xSTEPDownload STEP file SEN5x9.4 MBDownload STEP file SEN5x
STEP file SEN5x mechanical design-in example
  • 01/2022•
  • STEP•
  • 206.2 KB
Drawings/CADDownload STEP file SEN5x mechanical design-in example01/2022Download STEP file SEN5x mechanical design-in exampleSTEPDownload STEP file SEN5x mechanical design-in example206.2 KBDownload STEP file SEN5x mechanical design-in example
Calibration Certificate SEN5x/SEN6x
  • PDF•
  • 199.5 KB
CertificateDownload Calibration Certificate SEN5x/SEN6xDownload Calibration Certificate SEN5x/SEN6xPDFDownload Calibration Certificate SEN5x/SEN6x199.5 KBDownload Calibration Certificate SEN5x/SEN6x
SEN5x product flyer
  • 03/2022•
  • PDF•
  • 361.0 KB
FlyerDownload SEN5x product flyer03/2022Download SEN5x product flyerPDFDownload SEN5x product flyer361.0 KBDownload SEN5x product flyer
How can air quality at home be improved?
  • 04/2022•
  • PDF•
  • 260.1 KB
Application noteDownload How can air quality at home be improved?04/2022Download How can air quality at home be improved?PDFDownload How can air quality at home be improved?260.1 KBDownload How can air quality at home be improved?
How can I make my air purifier smart/efficient?
  • 04/2022•
  • PDF•
  • 215.4 KB
Application noteDownload How can I make my air purifier smart/efficient?04/2022Download How can I make my air purifier smart/efficient?PDFDownload How can I make my air purifier smart/efficient?215.4 KBDownload How can I make my air purifier smart/efficient?
Read Mass and Number Concentrations
  • 11/2022•
  • PDF•
  • 175.7 KB
Application noteDownload Read Mass and Number Concentrations11/2022Download Read Mass and Number ConcentrationsPDFDownload Read Mass and Number Concentrations175.7 KBDownload Read Mass and Number Concentrations
Reduced Power Operation SEN5x
  • 08/2022•
  • PDF•
  • 318.0 KB
Application noteDownload Reduced Power Operation SEN5x08/2022Download Reduced Power Operation SEN5xPDFDownload Reduced Power Operation SEN5x318.0 KBDownload Reduced Power Operation SEN5x
Arduino driver SEN5x
  • Link•
SoftwareDownload Arduino driver SEN5xDownload Arduino driver SEN5xLinkDownload Arduino driver SEN5xDownload Arduino driver SEN5x
Embedded driver SEN5x
  • Link•
SoftwareDownload Embedded driver SEN5xDownload Embedded driver SEN5xLinkDownload Embedded driver SEN5xDownload Embedded driver SEN5x
Raspberry Pi driver SEN5x
  • Link•
SoftwareDownload Raspberry Pi driver SEN5xDownload Raspberry Pi driver SEN5xLinkDownload Raspberry Pi driver SEN5xDownload Raspberry Pi driver SEN5x
Raspberry Pi snippets SEN5x
  • 08/2023•
  • Link•
SoftwareDownload Raspberry Pi snippets SEN5x08/2023Download Raspberry Pi snippets SEN5xLinkDownload Raspberry Pi snippets SEN5xDownload Raspberry Pi snippets SEN5x
REACH and RoHS declaration Partciulate Matter
  • 04/2026•
  • PDF•
  • 145.6 KB
CertificateDownload REACH and RoHS declaration Partciulate Matter04/2026Download REACH and RoHS declaration Partciulate MatterPDFDownload REACH and RoHS declaration Partciulate Matter145.6 KBDownload REACH and RoHS declaration Partciulate Matter
Indoor air quality brochure
  • 11/2025•
  • PDF•
  • 7.0 MB
FlyerDownload Indoor air quality brochure11/2025Download Indoor air quality brochurePDFDownload Indoor air quality brochure7.0 MBDownload Indoor air quality brochure
SEN5x product flyer Japanese
  • 03/2023•
  • PDF•
  • 1.3 MB
FlyerDownload SEN5x product flyer Japanese03/2023Download SEN5x product flyer JapanesePDFDownload SEN5x product flyer Japanese1.3 MBDownload SEN5x product flyer Japanese
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  • SEN55
Typ. relative humidity accuracy
4.5
%RH
4.5
%RH
Operating relative humidity range0 - 90%RH0 - 90%RH
Response time (τ63%)20s20s
VOC
Sensor output0-500 VOC Index0-500 VOC Index
Measurement range
0 - 1000ppm
0 - 1000ppm
Response time (τ63%)< 10s< 10s
Device-to-device var.15 - 15% m.v.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
1.0h
1.0h
On-chip humidity compensationYesYes
Generic
Supply voltage4.5V4.5V
Average supply current63000uA63000uA
Max. supply current110000uA110000uA
Operating temperature range [°C]-10 - 50°C-10 - 50°C
InterfacesI²CI²C
Size (LxWxH)52.8 x 43.6 x 22.3mm52.8 x 43.6 x 22.3mm
Temperature
Typ. temperature accuracy0.45°C0.45°C
Response time (τ63%) < 60s < 60s

Sensor evaluation

Buy the following products to evaluate this sensor

NameDescriptionSeriesCategory
SEK-SEN5xEvaluation kit SEN5x seriesSEK-SEN5xParticulate matter sensors

SEK-SEN5x

Evaluation kit SEN5x series

SEK-SEN5x

Particulate matter sensors

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

Applications for this product

Air conditioners

Highest comfort and maximum energy efficiency enabled by advanced sensors for air conditioner

Learn more

Air purifiers

Air quality monitoring with our air purifier sensor

Learn more

Demand-controlled ventilators

Maximized well-being and optimum energy efficiency with our DCV sensor

Learn more

Room sensors

Precise visualization and characterization of indoor air

Learn more

Smart speakers

Air quality sensors turn smart speakers into intelligent indoor air monitors

Learn more

VAV controllers

Drive and control solutions for airflow control

Learn more

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