Wireless CO2 Sensor - Accurate Carbon Dioxide Detection

The SCD4x is Sensirion’s next-generation miniature CO2 sensor. This sensor builds on the photoacoustic NDIR sensing principle and Sensirion’s patented PASens® and CMOSens® technology offers high accuracy at an unmatched price and a minor form factor. SMD assembly allows cost- and space-effective integration of the sensor combined with maximal design freedom. On-chip signal compensation is realized with the built-in SHT4x humidity and temperature sensor. CO2 is a key indicator of indoor air quality, as high levels compromise humans’ cognitive performance 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.

Features

• Photoacoustic NDIR sensor technology PASens®
• Smallest form factor: 10.1 x 10.1 x 6.5 mm3
• Reflow solderable for cost-effective assembly
• Digital I2C interface
• Integrated temperature and humidity sensor
• High accuracy, specified range 400 – 5’000 ppm
• Low power modes supported
• For a more accurate reading, Altitude needs to be set

CO2 Sensor Board

All Sensors work with our Wireless Sensor Node, STS-Node, allowing for easy connection to our IoT Platform.