SCD4x - The Smallest CO2 Sensor

Sensirion sensors SCD40 and SCD41 broke the size barrier and are the smallest CO2 sensors currently available. They measure only 10x10x7 mm, which is 10 times less than other CO2 sensors.

SCD4x Carbon Dioxide (CO2) Gadget - Sensirion

Air Quality Shorts: Part 3 - CO2 Sensors

SCD4x CO2 Sensors

SENSIRION SCD40 module gas sensor module detects CO2, carbon dioxide, temperature and humidity in one sensor I2C com - AliExpress

Gravity: SCD41 Infrared CO2 Sensor I2C Wiki - DFRobot

SCD41 CO2 Sensor Breakout (Carbon Dioxide / Temperature / Humidity) - RobotShop

Buy 7Semi SCD40 CO2 Sensor Breakout Online

Grove - CO2 & Temperature & Humidity Sensor (SCD41)

SCD4x CMOSens® Carbon Dioxide (CO2) Sensor Evaluation Board

SCD4X CO2 GADGET

Building the Pocket CO2 Project

[EASY INSTALLATION] - With its compact size and lightweight design, this CO2 sensor module is easy and quick to install, making it suitable for DIY

Carbon Dioxide Sensor Module with I2C Interface, CO2 Temperature Humidity Monitor Detection, 50ppm Accuracy, Compact and Portable for Home, Garden

Zigbee CO2 Sensor v2 from ALab Technology on Tindie