SCD30 Carbon Dioxide (CO2) Gas Sensor

The SCD-30 is an NDIR sensor, which is a ‘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 a lot bigger and more expensive, but it is the real thing. Perfect for environmental sensing, scientific experiments, air quality and ventilation studies, and more.

Data is read over I2C, so it works very nicely with just about any microcontroller or microcomputer. We’ve written both Arduino and Python/CircuitPython code so you can get started in a jiffy. Another nice element to this sensor is it comes with an SHT31 temperature and humidity sensor already built-in. The sensor is used to compensate the NDIR CO2 sensor, but it’s also readable, so you get full environmental data. With built-in SHT31, you cannot go wrong with this sensor when measuring Temperature, Humidity and CO2 concentration.

SCD-30 Specifications:

• NDIR CO2 sensor technology
• Integrated temperature and humidity sensor
• Dual-channel detection for superior stability
• Measurement range: 400 ppm – 10.000 ppm
• Accuracy: ±(30 ppm + 3%)
• Current consumption: 19 mA @ 1 meas. per 2 s.
• Fully calibrated and linearized
• I2C digital interface address 0x61