CO2L carbon dioxide, temperature and humidity sensor - SCD41 - Unit expansion module for M5Stack development modules

Index: MSS-22405
CO2L carbon dioxide , temperature and humidity sensor in the form of a Unit extension from M5Stack. The chip built into the module is SCD41 from Sensirion. The CO2 measurement range is from 400 ppm to 5000 ppm , with a CO2 sampling accuracy of ±(40 ppm + 5% of reading). Temperature measurement ranges from -10°C to 60°C and humidity from 0% to 95% RH.
CO2L carbon dioxide, temperature and humidity sensor - SCD41 - Unit expansion module for M5Stack...
€54.50
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Manufacturer: M5Stack
Compatibility: M5Stack Core M5Atom M5Stick

Product description: Carbon dioxide CO2L, temperature and humidity sensor - SCD41 - Unit expansion module for M5Stack development modules

CO2L carbon dioxide,temperature andhumidity sensor in the form of a Unit extension from M5Stack . The chip built into the module is SCD41 from Sensirion. The CO2 measurement range is from 400 ppm to 5000 ppm , with a CO2 sampling accuracy of ±(40 ppm + 5% of reading). Temperature measurement ranges from -10°C to 60°C , and humidity from 0% to 95% relative humidity. It uses the I2C digital communication interface, with address 0x62 .

The manufacturer has also prepared a user's guide , in which you will find a diagram of the system and sample program codes - check it out!

Carbon dioxide sensor CO2L, temperature and humidity - SCD41 - Unit expansion module for M5Stack development modules

Carbon dioxide sensor CO2L, temperature and humidity - SCD41 - Unit expansion module for M5Stack development modules.

CO2L, temperature and humidity sensor.

CO2L, temperature and humidity sensor.

Special features of the module

  • Detection of CO2 gas concentration in the air
  • Allows additional measurement of temperature and humidity
  • It is energy-saving - it is characterized by low power consumption
  • It has a built-in LDO voltage regulator 5 V -> 3.3 V
  • Supported development environments Arduino, UIFlow (Blockly, Python)
  • 2 LEGO compatible mounting holes

Suggested use of the sensor

  • Indoor CO2 detection (office, school, hospital)
  • Monitoring of temperature and humidity (in greenhouses, in private agriculture)

Sensor technical specification

  • Built-in chip: SCD41 by Sensirion
  • Measured value: carbon dioxide CO2L, temperature and humidity
  • CO2 measurement:
    • measuring range: from 400 ppm to 5000 ppm
    • measurement accuracy: ±(40 ppm + 5% of reading)
  • Temperature measurement: -10°C to 60°C
  • Humidity measurement: 0% to 95% RH
  • Communication interface: I2C
  • I2C interface address: 0x62
  • Dimensions: 48 x 24 x 16mm
  • Weight: 7.4g

Kit contents

  • Carbon dioxide sensor CO2L, temperature and humidity - SCD41 - Unit expansion module for M5Stack development modules
  • Connection cable with Grove connector
Components included in the set.

Components included in the set.

Package width 9.4 cm
Package height 9.5 cm
Package depth 2 cm
Package weight 0.013 kg

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Product reviews

CO2L carbon dioxide, temperature and humidity sensor - SCD41 - Unit expansion module for M5Stack development modules

5/5

Average grade

3

Customers opinion
The following opinions are collected
and verified by
an external partner Trustmate
and come from the post-purchase process.
Leszek 22.04.2026 Confirmed purchase Translated review
A good sensor, although it needs calibration. For 4 pieces, each shows a slightly different value, after calibration the results are already similar.
Aleh 06.11.2025 Confirmed purchase Translated review
It works as it should, it just needs to reset or set the Temperature Offset.
David 04.08.2025 Confirmed purchase

Country of Origin: China

Manufacturer Contact Details: M5Stack Technology Co Ltd Block A10, Expo Bay South Coast Shenzhen , Fuhai Street, Bao'an District

EU Marketer Contact Details: BOTLAND B. DERKACZ SP. K. Gola 25A - 63-640 Bralin

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