The SCD-30 is an advanced NDIR (Non-Dispersive Infrared) sensor module that measures CO₂ concentration directly without imprecise VOC estimates. The sensor provides high-accuracy CO₂ measurements in the range 400–10 000 ppm ±(30 ppm + 3 % of reading), and built-in temperature and humidity measurements with ±0.5 °C and ±3 % RH accuracy. This makes it an ideal solution for indoor air quality monitoring, greenhouses, laboratories, and HVAC optimization. The SCD-30 operates over I2C and UART buses, and its STEMMA QT connectors enable quick and easy connection without soldering.

Technical specifications

• CO₂ measurement accuracy: ±(30 ppm + 3 %)
• CO₂ measurement range: 400–10 000 ppm
• Temperature accuracy: ±0.5 °C
• Humidity accuracy: ±3 % RH
• I2C and UART interface
• Supply voltage: 3.3–5.0 V
• STEMMA QT / Qwiic connectors
• Dimensions: 45 mm × 23 mm × 7 mm

Package includes

• 1 × Adafruit SCD-30 CO₂, temperature, and humidity sensor (assembled and tested)
• Pin header for breadboard use

Link

Adafruit product page