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

Marsoni M251S
Sale price$885.50
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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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4.6 ★★★★★
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Amazon Customer
Louisville, US
★★★★★ 5
Good product
Size: 14/2 AWG-200 FT, Color: White
Exactly what I was looking for.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 27, 2026
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PARKER
Bozeman, US
★★★★★ 5
Great Wire
Size: 14/2 AWG-200 FT, Color: White
Great wire for home surround system. Pulled easy.
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Reviewed in the United States on March 12, 2026
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Verified Purchase
JOE D.
Pawtucket, US
★★★★★ 4
Great wire
Size: 14/2 AWG-200 FT, Color: White
It was put forward just the way it is great speaker wire
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 14, 2026
R
Verified Purchase
Richard M. Creevey
Grantham, US
★★★★★ 5
Speaker wire
Size: 14/2 AWG-200 FT, Color: White
Always my go to wire. And great price
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Reviewed in the United States on February 18, 2026
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Verified Purchase
Amazon Customer
Omaha, US
★★★★★ 5
Great in wall wire, easy to install
Size: 14/2 AWG-200 FT, Color: White
Ran this through studs for an in-wall 5.2 system, worked great, very easy to fish, wire threaded nicely, good copper, good connections. Easy to bend for 14 AWG.
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Reviewed in the United States on November 26, 2025

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