7Semi SCD41 CO2, Temperature and Humidity Sensor Breakout Mini

The 7Semi SCD41 CO₂, Temperature, and Humidity Sensor Breakout Mini is a high-precision environmental sensing module based on the Sensirion SCD41 sensor. It provides accurate measurements of carbon dioxide (CO₂) concentration, ambient temperature, and relative humidity in a compact form factor. Using Sensirion’s advanced photoacoustic NDIR sensing technology, the SCD41 offers reliable long-term stability and low power consumption. Designed for easy integration via the I²C interface, this breakout is ideal for indoor air quality monitoring, HVAC systems, and smart IoT applications where accurate CO₂ and climate data are critical.

Technical Specifications:

• Sensor Model: SCD41
  
• Measurement Parameters: CO₂ concentration, temperature, and relative humidity
  
• CO₂ Measurement Range: 400 ppm to 5000 ppm
  
• CO₂ Accuracy: ±(40 ppm + 5% of reading)
  
• Temperature Range: -10°C to +60°C
  
• Temperature Accuracy: ±0.8°C
  
• Humidity Range: 0% RH to 95% RH (non-condensing)
  
• Humidity Accuracy: ±3% RH (typical)
  
• Interface: I²C (up to 1000 kHz fast mode)
  
• Supply Voltage: 2.4 V to 5.5 V
  
• Average Current Consumption: 3.5 mA (typical)
  
• CO₂ Measurement Interval: Configurable, 5 seconds (typical)
  
• Warm-up Time: <60 seconds for full accuracy
  
• Output: Digital (I²C data output)
  
• Logic Level Compatibility: 3.3 V and 5 V systems
  
• Operating Temperature: -10°C to +60°C
  
• PCB Material: High-quality FR-4 with 2.54 mm header pins

Features:

• Integrated CO₂, temperature, and humidity sensing in one compact module
  
• Advanced photoacoustic NDIR sensing for high accuracy and reliability
  
• I²C digital interface for easy communication with microcontrollers
  
• Low power consumption suitable for portable and battery-powered devices
  
• Fully calibrated and linearized sensor output for quick deployment
  
• Excellent long-term stability and repeatable performance
  
• Wide operating voltage range for compatibility with 3.3 V and 5 V systems
  
• Compact breakout design ideal for space-constrained applications
  
• Factory-calibrated CO₂, temperature, and humidity measurements
  
• High measurement accuracy and short response time

Applications:

• Indoor air quality monitoring and control systems
  
• HVAC and ventilation optimization
  
• Smart home and building automation systems
  
• IoT environmental and climate monitoring devices
  
• Greenhouse and agricultural climate control
  
•  Workplace, school, and public space CO₂ monitoring
  
• Smart appliances and air purifiers
  
• Data logging and environmental research instruments
  
• Health and comfort analysis systems in smart environments