The RAK12037 is using the Sensirion SCD30 CO2 sensor, that can measure the concentration of CO2 in the air. Along with the NDIR measurement technology for CO₂ detection, a best-in-class Sensirion humidity and temperature sensor is also integrated on the same sensor module. The CO2 sensors are an important part of indoor Air Quality devices.

The SCD30 features dual-channel detection for superior stability and ±30ppm + 3% accuracy. It is commonly used in HVAC equipment, air purifiers and smart home applications.

Features : 

• Based on Sensirion SCD30 sensor
• NDIR measurement technology
• Integrated temperature, humidity sensor and CO2 sensor
• Dual-channel detection for superior stability
• I2C interface
• Measurement range: 400 ppm – 10.000 ppm
• Accuracy: ±(30 ppm + 3%)
• Current consumption: 19 mA @ 1 meas. per 2 s
• Fully calibrated and linearized
• Temperature measurement range: -40° C ~ 70° C
• Supply voltage: 3.3V
• Size 25 x 50 x 1 mm