Made For Tasmota/Matter
 
 
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 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 (IAQ) 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 concentration for a healthy, productive environment.

Input：USB 5V 1A
Wi-Fi Type：2.4Ghz
Wi-Fi chip: ESP32C3
CO₂ Measurement Range: 400 ppm ～ 2,000 ppm
Accuracy: ± 50 ppm
 
Features:
High-Precision Measurement
Built-in automatic calibration function improves data reliability.
 
GPIO
SDA：GPIO10
SCL：GPIO8
WS2812：GPIO21
Button：GPIO9
 
More information for Matter:
https://tasmota.github.io/docs/Matter