SENSIRION Gas Detection Sensor, Carbon Dioxide, 40000 ppm, PAsens CMOSens SCD4x Series


  1. Model: SENSIRION Gas Detection Sensor, Carbon Dioxide
  2. Large output range: 0 ppm–40,000 ppm
  3. Supply voltage: 3.3-5 V
  4. Peak Supply Current: 175-115 mA
  5. Voltage Ripple Peak to peak: 30mV
SKU: RK008794 Categories: ,


The SCD4x is Sensirion’s next-generation miniature CO2 sensor. This sensor builds on the photoacoustic sensing principle and Sensirion’s patented PAsens® and CMOSens® technology to offer high accuracy at an unmatched price and smallest form factor. SMD assembly allows cost- and space-effective integration of the sensor combined with maximal freedom of design. On-chip signal compensation is realized with the built-in SHT4x humidity and temperature sensor.

CO2 is a key indicator for indoor air quality as high levels compromise humans’ cognitive low power and well-being. The SCD4x enables smart ventilation systems to regulate ventilation in the most energy-efficient and human-friendly way. Moreover, indoor air quality monitors and other connected devices based on the SCD4x can help maintain low CO2 concentrations for a healthy, productive environment.


  1.  Photoacoustic sensor technology PASens
  2. Smallest form factor: 10.1 x 10.1 x 6.5 mm3
  3.  Reflow solderable for cost-effective assembly
  4.  Large output range: 0 ppm – 40’000 ppm
  5.  Large supply voltage range: 2.4 – 5.5 V
  6. High accuracy: ±(40 ppm + 5 %)  Digital I2C interface
  7. Integrated temperature and humidity sensor
  8. Low power operation down to < 0.4 mA avg. @ 5 V, 1 meas. / 5 minutes



Package Include:

1 X SENSIRION Gas Detection Sensor  Carbon Dioxide


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