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populardoublehelixx | Staff posted Nov 25, 2025 09:00 PM
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populardoublehelixx | Staff posted Nov 25, 2025 09:00 PM

CIS 7-in-1 Air Quality Monitor $29.5 + Free Shipping w/ Prime or on $35+

$30

$45

33% off
Amazon
12 Comments 1,396 Views
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Amazon [amazon.com] has CIS 7-in-1 Air Quality Monitor for $29.50. Shipping is free w/ Prime or on $35+.
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Amazon [amazon.com] has CIS 7-in-1 Air Quality Monitor for $29.50. Shipping is free w/ Prime or on $35+.

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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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Sort: Lowest to Highest | Last Updated 11/26/2025, 07:18 PM
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Amazon$29.50

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Nov 25, 2025 09:20 PM
153 Posts
Joined Apr 2023
TealBorder8536Nov 25, 2025 09:20 PM
153 Posts
do anyone know how easy to clean the micro dust sensor?
Nov 25, 2025 10:05 PM
64 Posts
Joined Dec 2016
BlibbergarossNov 25, 2025 10:05 PM
64 Posts
How is this so cheap compared to the competition?
Nov 25, 2025 11:00 PM
596 Posts
Joined Jun 2023
brownedpantsNov 25, 2025 11:00 PM
596 Posts
What would happen if you fart on it? I guess that would be a test to see if it actually does anything.
2
1
4
Nov 25, 2025 11:06 PM
97 Posts
Joined Mar 2008
endgame42Nov 25, 2025 11:06 PM
97 Posts
Quote from Blibbergaross :
How is this so cheap compared to the competition?
No WiFi or Bluetooth connectivity, and the battery only lasts ~24 hours. Definitely not as useful as some competitors.
2
Yesterday 01:36 AM
159 Posts
Joined Jan 2016
gatsbyleeYesterday 01:36 AM
159 Posts
I would buy one if it supports zigbee or sth to connect to HA.
Yesterday 06:21 PM
172 Posts
Joined Dec 2014
bombertoddYesterday 06:21 PM
172 Posts
Quote from gatsbylee :
I would buy one if it supports zigbee or sth to connect to HA.
Any recommendations?
Yesterday 06:57 PM
159 Posts
Joined Jan 2016
gatsbyleeYesterday 06:57 PM
159 Posts
Quote from bombertodd :
Any recommendations?
how about this?
https://slickdeals.net/f/18835504-44-99-amazon-smart-air-quality-monitor-at-amazon?src=SDSearchv3&attrsrc=Thread%3AExpired%3AFalse%7CSearch%3AType%3Anormal%7CSearch%3ASort%3Arelevance%7CSearch%3AHideExpired%3Afalse​

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Yesterday 11:04 PM
44 Posts
Joined Mar 2012
txkingYesterday 11:04 PM
44 Posts
does this actually measure co2, hcho, and tvoc or does it cheat like ecobee does and infer them based upon a single measured particle count and then say "meh this sounds good enough" for the others.
Yesterday 11:13 PM
1,932 Posts
Joined Oct 2014
MtnXfreerideYesterday 11:13 PM
1,932 Posts
Arent these junk with pretty much fake sensors? They were $13ish last year on temmuu and i got one and it was putting out fake numbers. I assume these are similar quality since its amazon in the US.
Yesterday 11:14 PM
1,932 Posts
Joined Oct 2014
MtnXfreerideYesterday 11:14 PM
1,932 Posts
Quote from Blibbergaross :
How is this so cheap compared to the competition?
Garbage sensors
Yesterday 11:41 PM
187 Posts
Joined Dec 2007
joegoloYesterday 11:41 PM
187 Posts
Quote from brownedpants :
What would happen if you fart on it? I guess that would be a test to see if it actually does anything.
I would expect no less from brownedpants
Today 12:21 AM
125 Posts
Joined Dec 2017
ShadowPToday 12:21 AM
125 Posts
$18 used like new seems like a fantastic deal.

I'll take a look and see if it does real CO2 or fake one after I get it, I didn't find anyone disassemble it yet

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