Adafruit SCD-41 - True CO2 Temperature and Humidity Sensor - STEMMA QT / Qwiic

Adafruit SCD-41 - True CO2 Temperature and Humidity Sensor - STEMMA QT / Qwiic

Marsoni

M251S

$885.50

Get it in 3 business days with 1 day shipping. Friday, May 29

Adafruit SCD-41 - True CO2 Temperature and Humidity Sensor - STEMMA QT / QwiicThe SCD 41 is a photoacoustic "true" CO2 sensor designed to measure the CO2 concentration (in parts per million, PPM) in ambient air. Unlike sensors like the SGP30, which approximate CO2 levels based on VOC gas concentration, the SCD 41 directly measures CO2, making it highly accurate but also larger and more expensive. It is ideal for environmental sensing, scientific experiments, and air quality studies. This sensor uses a different measurement

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Been going through these for about two years now across multiple replacements and they perform just as well as the official Eufy parts. Main brush, side brushes, filters, dust bags, mop — all fit correctly and do the job without any issues. Honestly if you’ve got a Eufy Omni S1 Pro, just buy these instead. No reason to pay extra for the official kit when these hold up just as well over time. No complaints

WAS THIS REVIEW HELPFUL?YesReportShare

Reviewed in the United States on March 22, 2026

Verified Purchase

Tytan Olmstead

Birmingham, US

★★★★★ 5

Amazing replacement parts

Color: Omni S1 Pro 17P

Works just like original parts, and fits my s1 perfectly. Mops are super easy to change and clean

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Reviewed in the United States on November 21, 2025