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phoinix | Staff 4.8K Views
Apr 11, 2026 5:00 AM

$19.99 | 3-in-1 Carbon Monoxide w/Temp & Humidity Detector at Woot!

$20

$90

77% off
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Woot! [woot.com] has 3-in-1 Carbon Monoxide w/Temp & Humidity Detector for $19.99. Shipping is free for Amazon Prime Members (must login with your Amazon account and select a shipping address in order for Woot to apply free shipping) or is otherwise $6 per order.

Price:
$70 lower (78% savings) than the pointless price of $89.99

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Deal Details
Community Notes
About the Poster
Woot! [woot.com] has 3-in-1 Carbon Monoxide w/Temp & Humidity Detector for $19.99. Shipping is free for Amazon Prime Members (must login with your Amazon account and select a shipping address in order for Woot to apply free shipping) or is otherwise $6 per order.

Price:
$70 lower (78% savings) than the pointless price of $89.99

Please report the deal if expired
My other deals

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15 Comments

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Expert
This user is an Expert in Tech & Electronics
Apr 11, 2026 7:51 AM
20.8K Comments
Joined Sep 2011
bluekiwi
Expert
This user is an Expert in Tech & Electronics
Apr 11, 2026 7:51 AM
20.8K Comments
Appears to be this brand
$46.34 for a 2 pack, canadian,

https://www.amazon.ca/Monoxide-De...B0FC1J8MK3
2
Apr 11, 2026 11:31 AM
241 Comments
Joined Nov 2020
ErnestoSimonApr 11, 2026 11:31 AM
241 Comments
Thank you. Got 3 units to replace my very old ones. Nice to have temp and humidity as well.
Apr 11, 2026 4:33 PM
93 Comments
Joined Apr 2017
LemonarApr 11, 2026 4:33 PM
93 Comments
Quote from bluekiwi View quoted comment :
Appears to be this brand
$46.34 for a 2 pack, canadian,

https://www.amazon.ca/Monoxide-De...B0FC1J8MK3
Or this: https://www.amazon.com/Monoxide-D...=8-37&th=1
Apr 11, 2026 4:34 PM
93 Comments
Joined Apr 2017
LemonarApr 11, 2026 4:34 PM
93 Comments
3 for $33 on Amazon - https://www.amazon.com/Monoxide-D...=8-37&th=1
1
Expert
This user is an Expert in Tech & Electronics
Apr 11, 2026 6:04 PM
20.8K Comments
Joined Sep 2011
bluekiwi
Expert
This user is an Expert in Tech & Electronics
Apr 11, 2026 6:04 PM
20.8K Comments
Quote from Lemonar View quoted comment :
3 for $33 on Amazon - https://www.amazon.com/Monoxide-D...=8-37&th=1
3 for $33 is a better price vs 3 for $60 from this deal
Apr 11, 2026 6:40 PM
10.3K Comments
Joined Sep 2007
Santa_ClausApr 11, 2026 6:40 PM
10.3K Comments
Quote from ErnestoSimon View quoted comment :
Thank you. Got 3 units to replace my very old ones. Nice to have temp and humidity as well.
dude, cheaper at amazon for 3 see the replies.
Apr 11, 2026 6:41 PM
10.3K Comments
Joined Sep 2007
Santa_ClausApr 11, 2026 6:41 PM
10.3K Comments
2 reviews?

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Apr 11, 2026 6:51 PM
12.1K Comments
Joined Sep 2007
RugerRedhawkApr 11, 2026 6:51 PM
12.1K Comments
sketchy
Apr 11, 2026 7:13 PM
708 Comments
Joined Apr 2014
Henchman_21Apr 11, 2026 7:13 PM
708 Comments
I got this item from a previous Woot sale and it's not bad for the price. It's nice to have three meters.
Apr 11, 2026 7:14 PM
4.4K Comments
Joined Sep 2005
cjfrugalApr 11, 2026 7:14 PM
4.4K Comments
Quote from bluekiwi View quoted comment :
3 for $33 is a better price vs 3 for $60 from this deal
Currently unavailable
Pro
Apr 11, 2026 10:00 PM
356 Comments
Joined Aug 2020
WiseRose8215
Pro
Apr 11, 2026 10:00 PM
356 Comments
Has anyone used it with HA?
Pro
Apr 12, 2026 5:41 PM
2.2K Comments
Joined Apr 2017
ekguru
Pro
Apr 12, 2026 5:41 PM
2.2K Comments
Reviewed in the United States on March 27, 2026
Item Package Quantity: 3
It doesn't alert until it hits 150ppms of co or higher and that point there would Harley be severely side effects. 30ppms in the ambient air is above the safety threshold.
Pro
Apr 13, 2026 4:10 AM
3.5K Comments
Joined Mar 2007
hkteaman
Pro
Apr 13, 2026 4:10 AM
3.5K Comments
Quote from Lemonar View quoted comment :
3 for $33 on Amazon - https://www.amazon.com/Monoxide-D...=8-37&th=1
Thanks for posting. Looks the same as Woot's deal, only 2 reviews but worth a try at $34 and 30 days return.
Apr 13, 2026 4:17 AM
1K Comments
Joined Jan 2007
Orange_ElvisApr 13, 2026 4:17 AM
1K Comments
I like my carbon monoxide at about 40% relative humidity.

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Pro
Apr 14, 2026 1:00 PM
3.5K Comments
Joined Mar 2007
hkteaman
Pro
Apr 14, 2026 1:00 PM
3.5K Comments
Quote from hkteaman View quoted comment :
Thanks for posting. Looks the same as Woot's deal, only 2 reviews but worth a try at $34 and 30 days return.
I received my order yesterday. The design looks good but the material feels cheap. The temperature reading was 3-5 degrees higher than my Govee thermometer and the CO reading is the same as my Kidde CO detector reading 0 ppm. I don't have a humidity device to compare the reading with. Basement reading is 10% higher than the first floor reading.
The display is well lit so it's easy read. I hope the CO reading stays accurate and I will keep an eye out and compare with the Kidde unit before moving it to another location. Overall, not bad for $11 each.
Last edited by hkteaman April 14, 2026 at 06:17 AM.

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