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forum threadslickception posted Dec 01, 2025 03:05 AM
forum threadslickception posted Dec 01, 2025 03:05 AM

CIS 7-in-1 Air Quality Monitor $27 @ Amazon

$27

$45

40% off
Amazon
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Amazon has CIS 7-in-1 Air Quality Monitor for $26.91. Shipping is free w/ Prime or on $35+.

CIS 7-in-1 Air Quality Monitor, Indoor Humidity Monitor, Temperature, CO2, TVOC, HCHO, Time, Date Display

https://www.amazon.com/dp/B0CWS5317P
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About the Poster
Amazon has CIS 7-in-1 Air Quality Monitor for $26.91. Shipping is free w/ Prime or on $35+.

CIS 7-in-1 Air Quality Monitor, Indoor Humidity Monitor, Temperature, CO2, TVOC, HCHO, Time, Date Display

https://www.amazon.com/dp/B0CWS5317P

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Model: CIS 7-in-1 Air Quality Monitor, Indoor Humidity Monitor, Temperature, CO2, TVOC, HCHO, Time, Date Display Desktop Air Quality Tester, Air Quality Meters for Home Office Hotel Restaurant School

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Dec 01, 2025 06:17 AM
291 Posts
Joined Oct 2015
medgomelDec 01, 2025 06:17 AM
291 Posts
Got it a few days ago from Amazon Resale for $17. It is going back. Had absolutely wrong sensor data on CO2, temperature and humidity. IDK, if my specific unit was a lemon.
1
Dec 01, 2025 08:33 PM
98 Posts
Joined Feb 2012
Ross1987Dec 01, 2025 08:33 PM
98 Posts
Quote from medgomel :
Got it a few days ago from Amazon Resale for $17. It is going back. Had absolutely wrong sensor data on CO2, temperature and humidity. IDK, if my specific unit was a lemon.
The design of these (and all consumer VOC/CO2 measurement devices) is fundamentally flawed and there's not really an affordable way to do some of these measurements "correctly".
Dec 01, 2025 09:16 PM
291 Posts
Joined Oct 2015
medgomelDec 01, 2025 09:16 PM
291 Posts
Quote from Ross1987 :
The design of these (and all consumer VOC/CO2 measurement devices) is fundamentally flawed and there's not really an affordable way to do some of these measurements "correctly".
You are absolutely right

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