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SCD-41 - True CO2 Temperature and Humidity Sensor

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Product Description

The SCD-41 is a photoacoustic 'true' CO2 sensor that will tell you the CO2 PPM (parts-per-million) composition of ambient air. Unlike the SGP30, this sensor isn't approximating it from VOC gas concentration - it really is measuring the CO2 concentration! That means it's bigger and more expensive, but it is the real thing. Perfect for environmental sensing, scientific experiments, air quality and ventilation studies, and more.

Compared to the illustrious SCD-30, this sensor uses a different measurement technique, which allows it to be much smaller. The overall data quality should be very similar, however. Like the SCD-30, this sensor has data read over I2C, so it works very nicely with just about any microcontroller or microcomputer. There's both Arduino and Python/CircuitPython code so you can get started in a jiffy.

This sensor can run from 3.3 to 5V but it's more important for it to have a quiet power supply with low ripple, than any particular voltage.

Technical Details

  • Photoacoustic CO2 sensor technology
  • Integrated temperature and humidity sensor
  • Measurement range: 400 ppm – 5000 ppm
  • Accuracy: ±(40 ppm + 5 % of reading)
  • Fully calibrated and linearized
  • I2C digital interface address 0x61
  • Sensor Element Size: 10.1mm x 10.1mm x 6.5 mm

Package include:

  • 1 SCD-41 - True CO2 Temperature and Humidity Sensor

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