Adafruit SCD-4x - True CO2 Temperature and Humidity Sensors CO2 sensing over I2C in a tiny package! by Kattni Rembor published August 26, 2021, last edited August 19, 2026 last major update August 19, 2026 posted in Adafruit Products Sensors/ Temperature & Humidity CircuitPython Breakout Boards Programming/ Python Save New Favorite × Please sign in to include this guide in your list of favorites. You will be redirected back to this guide once you sign in, and can then save this guide as one of your favorites. Link Note Download Overview Pinouts Python & CircuitPython Python Docs Arduino WipperSnapper Downloads Single page Feedback? Corrections? Text View Guide Products view all Primary Adafruit SCD-40 - True CO2, Temperature and Humidity Sensor $44.95 Add to Cart Primary Adafruit SCD-41 - True CO2 Temperature and Humidity Sensor $49.95 Add to Cart Primary Adafruit SCD-43 - True CO2 Temperature and Humidity Sensor Out of Stock View product details 38 Updated Beginner Product guide 😍 2 Python Docs Page last edited August 20, 2021 Text editor powered by tinymce. Python & CircuitPython Arduino