arduino › sensor module
sensirion Sensirion SCD40 CO2 Sensor
Budget companion to the SCD41 — same photoacoustic CO2 approach, slightly narrower range and accuracy. Same I2C library and address (0x62) as SCD41; choose based on accuracy vs cost.
Specifications
- interface
- i2c
- voltage v
- 3v3_or_5v
- i2c address
- 0x62
- library arduino
- Sensirion_I2C_SCD4x
- accuracy
- +/-50ppm + 5%
- range
- 400-2000ppm CO2
- pin count
- 4
Sources
- SparkFun open product catalog · ingest 2026-05-06
- Adafruit open product catalog · ingest 2026-05-06