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phoinix | Staff 27.1K Views
Mar 14, 2026 11:51 AM

Google Nest Temperature Sensor (2nd Gen)

$25

$40

37% off
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Deal Details
Amazon has Google Nest Temperature Sensor (2nd Gen) on sale for $24.99. Shipping is free w/ Prime or on $35+ orders.

Thanks to Deal Hunter phoinix for sharing this deal.

About this product:
  • Works with Nest Learning Thermostat 3rd and 4th gen
  • Battery lasts up to 3 years
  • Place in up to six rooms
  • Sleek porcelain white design
  • Simple setup via Google Home or Nest app

Editor's Notes

Written by jimmytx | Staff
  • About this Store:
  • Additional Information:
    • Please see the original post for additional details and/or view the Wiki and forum comments for further helpful discussion if available.

Original Post

Written by phoinix | Staff
Community Notes
About the Poster
Deal Details
Community Notes
About the Poster
Amazon has Google Nest Temperature Sensor (2nd Gen) on sale for $24.99. Shipping is free w/ Prime or on $35+ orders.

Thanks to Deal Hunter phoinix for sharing this deal.

About this product:
  • Works with Nest Learning Thermostat 3rd and 4th gen
  • Battery lasts up to 3 years
  • Place in up to six rooms
  • Sleek porcelain white design
  • Simple setup via Google Home or Nest app

Editor's Notes

Written by jimmytx | Staff
  • About this Store:
  • Additional Information:
    • Please see the original post for additional details and/or view the Wiki and forum comments for further helpful discussion if available.

Original Post

Written by phoinix | Staff

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Top Comments

ChristopherK8999
13Comments
10Reputation
Great for kids rooms. Especially the curious ones who like to randomly play with the vent panels... 😅
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Community Reviews

Google Nest Temperature Sensor 2nd Gen is a small add on for an existing Nest thermostat that helps manage comfort in a specific room instead of the whole house. It is especially useful for bedrooms and kids rooms when the main thermostat sits in a hallway or another room, and it can switch control on a schedule or average readings across sensors. The 2nd Gen housing looks nicer than the first generation, but the average between sensors feature only works with the Gen 4 thermostat. Range and accuracy can depend on placement, with some setups seeing weaker reach or readings a few degrees off.

Common Questions (5)

  • Yes. It is commonly used in bedrooms and kids' rooms to keep that room comfortable even when the main thermostat is elsewhere, especially when temperatures differ a lot between rooms.

    ChristopherK8999HRey13HRey13D33pak

  • You can assign it to specific time periods and switch control from the thermostat to any sensor for up to four periods. The default behavior uses the average temperature of all sensors plus the thermostat itself.

    rjcpfishergeekwithoutacauselbp775

  • It can help if your zoned setup still relies on one primary thermostat or manual zoning, because it lets you monitor and steer comfort by room. If each zone already has its own thermostat and dampers, it may add little.

    BillyI7428geekwithoutacauseBillyI7428

  • It can be spot on, but placement matters; poor placement can make readings seem 2-3 degrees off, and one Gen 2 unit reportedly had about 10 feet less range than a Gen 1 in the same home.

    luigimariogryhndMajorMayhem

  • No. It must be paired with an existing Nest thermostat and is used to measure temperature in one room so the thermostat can control comfort from that room instead of the main thermostat location.

    mjashslicknoANANDforme

AI-generated summary based on comments from the community. Updated ago

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30 Comments

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Mar 15, 2026 12:00 AM
4.5K Comments
Joined Jul 2005
geekwithoutacauseMar 15, 2026 12:00 AM
4.5K Comments
Quote from BillyI7428 View quoted comment :
It's great if you have a zoned system so you can see the temps everywhere and level things out. Or if you have smart vents have them open/close depending on the temp
I don't see how this would help you at all for a zoned system. A Zoned system should already have it's own thermostat in controlled areas along w dampers if shared.
2
Mar 15, 2026 12:31 AM
19 Comments
Joined Dec 2018
BillyI7428Mar 15, 2026 12:31 AM
19 Comments
Quote from geekwithoutacause View quoted comment :
I don't see how this would help you at all for a zoned system. A Zoned system should already have it's own thermostat in controlled areas along w dampers if shared.
If its a mildly newer account yes, but I've worked on setups that are 20 years on that were zoned but one primary thermostat and zoning done manually
Mar 15, 2026 12:53 AM
650 Comments
Joined Nov 2016
luigimarioMar 15, 2026 12:53 AM
650 Comments
Quote from geekwithoutacause View quoted comment :
why not
The temperature they 'sense' is always 2-3 degrees off than what it should be
2
Mar 15, 2026 4:10 AM
2K Comments
Joined Nov 2009
MajorMayhemMar 15, 2026 4:10 AM
2K Comments
Quote from luigimario View quoted comment :
Is the 2nd gen any different from
1st gen. I have the first gen but I am not happy with them
2nd gen has a more beveled, pebble like housing (it looks nicer). Functionally they are both supposed to be the same. However, my one gen 2 has about 10 feet less range than my gen 1 (at least in my home). Where the gen 1 worked inside our master bedroom, the gen 2 only works right up to the MBR door, but on the outside of the room.
Mar 15, 2026 4:17 AM
180 Comments
Joined Aug 2008
curtisluMar 15, 2026 4:17 AM
180 Comments
you really only need enough for the highly occupied spaces in the house. For me it is two.
Mar 15, 2026 4:18 AM
42 Comments
Joined Sep 2024
jm.snMar 15, 2026 4:18 AM
42 Comments
this is something else
1
Mar 15, 2026 10:03 AM
832 Comments
Joined Jun 2003
RobinR99Mar 15, 2026 10:03 AM
832 Comments
Quote from geekwithoutacause View quoted comment :

It's configurable but the default is that it uses the average temps of all sensors (and thermostat itself)
ahhhhh, now that would be very useful! Thank you

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Mar 15, 2026 12:04 PM
698 Comments
Joined Oct 2018
gryhndMar 15, 2026 12:04 PM
698 Comments
Quote from luigimario View quoted comment :
The temperature they 'sense' is always 2-3 degrees off than what it should be
I don't have that problem with mine at all. It's spot on. Sounds like poor sensor placement if nothing else.
Mar 15, 2026 3:11 PM
2 Comments
Joined Nov 2019
D33pakMar 15, 2026 3:11 PM
2 Comments
I use these sensors in the bedroom because the main thermostat is in the hallway under a skylight and I set the thermostat to be controlled from the sensor. It's sometimes up to a 7 degree difference and I want the rooms to be comfortable. I can use an average of both or go off on or or the other.
Mar 15, 2026 4:31 PM
896 Comments
Joined Apr 2010
lbp775Mar 15, 2026 4:31 PM
896 Comments
Quote from RobinR99 View quoted comment :
ahhhhh, now that would be very useful! Thank you
Keep in mind that the average between sensors feature only works with the Gen 4 thermostat.
Mar 15, 2026 7:25 PM
4.5K Comments
Joined Jul 2005
geekwithoutacauseMar 15, 2026 7:25 PM
4.5K Comments
Quote from BillyI7428 View quoted comment :
If its a mildly newer account yes, but I've worked on setups that are 20 years on that were zoned but one primary thermostat and zoning done manually
Ok. Makes sense. My current home has dampers and one of them seems to randomly open/close when its running Supposed to stay closed. Im a guessing bad damper motor? This common ?
Mar 16, 2026 2:37 AM
86 Comments
Joined Oct 2013
WonDMar 16, 2026 2:37 AM
86 Comments
FYI, Google Nest discontinued their 1st/2nd gen thermostat to stop working over internet (works only in offline). They're selling IoT product with kill timer.

https://www.howtogeek.com/the-1st...hatgpt.com
1
Mar 16, 2026 5:41 PM
4.5K Comments
Joined Jul 2005
geekwithoutacauseMar 16, 2026 5:41 PM
4.5K Comments
Quote from WonD View quoted comment :
FYI, Google Nest discontinued their 1st/2nd gen thermostat to stop working over internet (works only in offline). They're selling IoT product with kill timer.

https://www.howtogeek.com/the-1st...hatgpt.com
They're being sued over it.
1
Mar 16, 2026 6:14 PM
1 Comments
Joined Feb 2026
JollyCircle5836Mar 16, 2026 6:14 PM
1 Comments
Quote from noANANDforme View quoted comment :
It's used primarily for sensing temperature in one room (say a kids room) when the main thermostat is in another room (master bedroom). Helpful when there are drastic temperature differences between rooms
Useless
2

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Mar 16, 2026 6:28 PM
125 Comments
Joined May 2006
twilMar 16, 2026 6:28 PM
125 Comments
Dead? I'm seeing $39.99.

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