SCD40 I2C CO? Temperature & Humidity Sensor Breakout Module – 7Semi

The 7Semi SCD40 is a compact sensor breakout based on Sensirion’s advanced photoacoustic NDIR technology. It accurately measures CO? concentration from 400 ppm to 40,000 ppm, along with ambient temperature and humidity. Ideal for air quality monitoring, HVAC systems, and IoT applications. It communicates over the I²C interface and is compatible with most microcontrollers. With low power consumption, long-term stability, and minimal recalibration requirements, the SCD40 is well-suited for portable and embedded systems requiring reliable environmental data.

Features

• Photoacoustic CO? Sensing: Uses advanced photoacoustic infrared technology for high-precision CO? measurement.
  
• 3-in-1 Environmental Monitoring: Simultaneously tracks CO? levels, temperature, and humidity for a complete atmospheric overview.
  
• Wide CO? Detection Range: Measures concentrations from 400 ppm to 40,000 ppm, with optimal accuracy in the 400–2000 ppm range.
  
• High Accuracy: Offers a precision of ±(40 ppm + 5%), making it ideal for critical monitoring applications.
  
• Low Power Consumption: Consumes only 17 mA at 5s intervals and 0.5 mA at 5-minute intervals, perfect for battery-powered projects.
  
• Plug-and-Play Ready: Factory-calibrated and ready for immediate use—no manual calibration required.
  
• I2C Interface: Compatible with Arduino, Raspberry Pi, ESP32, STM32, and other popular microcontrollers via I2C.
  
• Compact Design: Small, robust module fits easily into embedded systems and space-limited enclosures.

SCD40 carbon dioxide sensor Breakout I2C Arduino Connections