Specification

CO₂
Measurement range
0 - 100
0 - 100 vol%
Accuracy: Baseline
±0.5
±0.5 vol%
Accuracy: Linearity
±3.0%MV
±3.0%MV vol%
Response time (τ63%)
< 2
< 2 s
Temperature stability
0.025
0.025 vol% / °C
Generic
Supply voltage
2.7 - 5.5
2.7 - 5.5 V
Average supply current
50
50 uA
Max. supply current
5000
5000 uA
Interfaces
I²C
I²C
Size (LxWxH)
3.5 x 3 x 1
3.5 x 3 x 1 mm³

Technical downloads

Name Type Date File Size
Datasheet STC31

10/2020

File

897.1 KB

Datasheet 10/2020 PDF 897.1 KB
STEP file STC31

01/2023

File

1.5 MB

CAD 01/2023 STEP 1.5 MB
SEK-ControlCenter (all devices)

10/2021

Link

-

Viewer software 10/2021 Link -
Field calibration STC31

08/2020

File

328.5 KB

Application note 08/2020 PDF 328.5 KB
Handling and assembly guide STC31

08/2020

File

283.5 KB

User guide 08/2020 PDF 283.5 KB
Arduino driver STC31

10/2021

Link

-

Software 10/2021 Link -
Embedded driver STC31

10/2021

Link

-

Software 10/2021 Link -
Raspberry Pi driver STC31

10/2021

Link

-

Software 10/2021 Link -
RoHS, REACH and Hal-Free declaration STC3x

02/2024

File

85.5 KB

Certificate 02/2024 PDF 85.5 KB

Sensor evaluation

Buy the following products to evaluate this sensor

Name Description Series Category
SEK-SensorBridge
Connecting bridge with two sensor ports SEK-SensorBridge
SEK-STC31
CO₂ evaluation kit STC31 SEK-STC31 CO₂

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

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