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.

Building the Pocket CO2 Project

AMo: #1 CO2 monitor, world class sensor in stylish package • ThingPulse

SCD4x CO2 Sensors

SCD40 CO2 Sensor Breakout from ModuleFun on Tindie

Mini CO2, Temp, Humi, Pressure - WIFI Sensor from TeHyBug on Tindie

I tried to measure CO2 easily with Sensirion's CO2 gadget! - Semiconductor Business -Macnica,Inc.

DIY Carbon Dioxide Sensor SCO2-1 - Idea Born : r/screekworkshop

SCD40 CO2 Gas Sensor Module Temperature Humidity Sensor Module I2C Communication

Buy Wholesale China Ultra-low Power 9.7inch E-paper Parallel Port 1200*825 E Ink Lcd For E-reader,ebook Screen Monitor Scd4x Co2 Sensor Rtc Ds3231 & E-paper Display at USD 78