7Semi SCD41 High Accuracy CO2, Temperature and Humidity Sensor Breakout I2C

The 7Semi SCD41 High Accuracy CO₂, Temperature and Humidity Sensor Breakout is a compact, high-precision sensing module designed for advanced indoor air-quality monitoring. It integrates a photoacoustic NDIR CO₂ sensor with built-in temperature and humidity measurement and communicates through I²C, making it suitable for smart-home automation, HVAC systems, environmental sensing, and IoT applications needing highly reliable CO₂ data.

Technical Specifications:

• Target Gas: CO₂ (carbon dioxide)
  
• CO₂ Measurement Range: 400 to 5,000 ppm
  
• CO₂ Accuracy: ±(40 ppm + 5% of reading) typical
  
• Temperature Accuracy: ±0.8 °C typical
  
• Humidity Accuracy: ±6% RH typical
  
• CO₂ Response Time: ~60 seconds (τ63%)
  
• Supply Voltage: 2.4 V to 5.5 V
  
• Interface: I²C digital communication
  
• Operating Temperature: –10 °C to +60 °C
  
• Sensor Size: Approximately 10.1 × 10.1 × 6.5 mm
  
• Typical Current Consumption: Designed for low-power embedded systems

Features:

• High-accuracy photoacoustic NDIR CO₂ sensing technology
  
• Integrated temperature and humidity measurement
  
• Factory calibrated for ready-to-deploy performance
  
• Easy to integrate using the I²C digital interface
  
• Compact breakout format suitable for prototyping and product development
  
• Ideal for high-precision indoor air-quality monitoring applications

Applications:

• Indoor air-quality monitoring and control systems
• Smart HVAC and ventilation automation
  
• IoT sensing nodes and environmental telemetry
  
• Portable and embedded CO₂ monitoring instruments
  
• Research, laboratory, and educational systems
  
• Air-purifier and filtration system performance tracking