Temperature & Humidity Sensors · Head to head

Nest Temperature Sensor (2nd gen) vs SwitchBot Indoor/Outdoor Thermo-Hygrometer

Full Smart Temperature/Humidity Sensors comparison in 2026

Updated October 2026
Data from the official Google and SwitchBot sites.
2026 verdict
The SwitchBot Indoor/Outdoor Thermo-Hygrometer is the pick here, because it measures humidity and works outdoors, while the Nest Temperature Sensor (2nd gen) reads temperature for a Nest Thermostat alone.
The SwitchBot wins on price, a full set of integrations from Alexa and Google Home to Apple Home through Matter, temperature and humidity sensing with an IP65 weather rating, and alerts plus history of its own. The Nest Temperature Sensor (2nd gen) answers with a stronger owner rating and a 3-year battery against 2 years. Choose the SwitchBot Indoor/Outdoor Thermo-Hygrometer for general monitoring indoors or out, and the Nest Temperature Sensor (2nd gen) only if you already run a compatible Nest Thermostat and want it to prioritize one room.
Nest Temperature Sensor (2nd gen)
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$39.98

Also sold in packs

  • Pack of 3$99.99$33.33 per unitYou save $19.95Buy
vs
Winner
SwitchBot Indoor/Outdoor Thermo-Hygrometer
15% OFF
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$12.74
$14.99

Also sold in packs

  • Pack of 3$31.59$10.53 per unitYou save $6.63Buy
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FeatureNest Temperature Sensor (2nd gen)SwitchBot Indoor/Outdoor Thermo-HygrometerWinner
Price$39.98$12.74SwitchBot Indoor/Outdoor Thermo-Hygrometer
Rating4.44.2Nest Temperature Sensor (2nd gen)
Battery Life3 years2 yearsNest Temperature Sensor (2nd gen)
IntegrationsGoogle HomeGoogle Home, Alexa, Apple HomeKit, Samsung SmartThings, Home Assistant, MatterSwitchBot Indoor/Outdoor Thermo-Hygrometer
SensorsTemperatureTemperature, HumiditySwitchBot Indoor/Outdoor Thermo-Hygrometer
AlertsNoneTemperature Alerts, Humidity Alerts, Low Battery AlertsSwitchBot Indoor/Outdoor Thermo-Hygrometer
Warranty1 year1 yearTie
ConnectivityBluetoothBluetoothTie
ScreenNONOTie

What the differences mean

What it measures

This is the widest gap. The SwitchBot Indoor/Outdoor Thermo-Hygrometer measures both temperature and humidity, while the Nest Temperature Sensor (2nd gen) measures temperature only. If a humidity reading or a dew-point style alert is what you want, the Nest sensor cannot provide it.

Where it can go

The SwitchBot Indoor/Outdoor Thermo-Hygrometer carries an IP65 rating for splashes, rain and dust, so it suits garages, greenhouses and outdoor housing. The Nest Temperature Sensor (2nd gen) has no weather rating and is meant for indoor placement near a thermostat.

Smart home reach

The SwitchBot Indoor/Outdoor Thermo-Hygrometer works with Alexa, Google Home, Apple Home through Matter, SmartThings, Home Assistant and Matter. The Nest Temperature Sensor (2nd gen) reports only to its paired Nest thermostat inside the Google Home app, with no Alexa, Apple Home, SmartThings, Home Assistant or Matter of its own.

Alerts and history

The SwitchBot Indoor/Outdoor Thermo-Hygrometer sends temperature and humidity alerts, a low-battery alert, runs automations and keeps history. The Nest Temperature Sensor (2nd gen) has none of that on its own; its readings and scheduling live on the connected thermostat and in the Google Home app.

Battery and setup dependency

The Nest Temperature Sensor (2nd gen) runs about 3 years on a CR2 cell against about 2 years on two AAA batteries for the SwitchBot Indoor/Outdoor Thermo-Hygrometer. The Nest also needs a compatible Nest Thermostat to do anything, where the SwitchBot works standalone over Bluetooth and only needs a hub for remote access.

Which one to buy if

What owners say

The two groups are solving different problems, and their reviews show it. Nest Temperature Sensor (2nd gen) owners describe the same win, a thermostat that finally tracks the bedroom or the upstairs floor instead of where it is mounted, with several reporting lower bills after scheduling by room, and setup called quick through the Google Home app. Their warnings are that it pairs only to Nest hardware, that a number of UK buyers could not pair it with their local thermostat, and that the pairing itself sometimes hangs. SwitchBot Indoor/Outdoor Thermo-Hygrometer owners praise accurate, stable readings in places other sensors struggle, from garages and greenhouses to freezers and incubators, with the IP65 body holding up for a year or more and Bluetooth steady for local use. Their gripes are no built-in display, Bluetooth range that gets thin for distant placements without a hub, and battery contacts a few call fragile.

Frequently Asked Questions

Does the Nest Temperature Sensor (2nd gen) measure humidity?

No. The Nest Temperature Sensor (2nd gen) measures temperature only, so it has no humidity reading. The SwitchBot Indoor/Outdoor Thermo-Hygrometer measures both temperature and humidity, which is the main reason to pick it if a humidity figure is what you need.

Which is better overall: Nest Temperature Sensor (2nd gen) or SwitchBot Indoor/Outdoor Thermo-Hygrometer?

The SwitchBot Indoor/Outdoor Thermo-Hygrometer is the more capable sensor, adding humidity, an IP65 outdoor rating, alerts, history and wide smart home support including Apple Home through Matter. The Nest Temperature Sensor (2nd gen) wins only on owner rating and battery life, and its value is tied to owning a compatible Nest Thermostat that it can steer.

What is the biggest difference between the Nest Temperature Sensor (2nd gen) and the SwitchBot Indoor/Outdoor Thermo-Hygrometer?

One is a thermostat accessory, the other is a sensor. The Nest Temperature Sensor (2nd gen) pairs to a Nest Thermostat and reports temperature so the thermostat can prioritize a room, with no independent connectivity. The SwitchBot Indoor/Outdoor Thermo-Hygrometer works standalone over Bluetooth, measures humidity too, carries an IP65 rating and integrates with Alexa, Google Home, Apple Home, SmartThings, Home Assistant and Matter.

Do these sensors need a hub or a thermostat?

The Nest Temperature Sensor (2nd gen) needs a compatible Nest Thermostat and does nothing without one. The SwitchBot Indoor/Outdoor Thermo-Hygrometer works on its own over Bluetooth for local readings, and a SwitchBot Hub is optional, only adding remote access and its smart home integrations.

Who should buy the Nest Temperature Sensor (2nd gen)?

Nest Thermostat owners in multi-room or multi-story homes who want to schedule heating and cooling by the room that matters, and who have confirmed their thermostat is compatible.

Who should buy the SwitchBot Indoor/Outdoor Thermo-Hygrometer?

Anyone monitoring temperature and humidity in a garage, greenhouse, freezer, incubator or outdoor spot who wants alerts, history and integrations, and does not mind reading everything through an app.

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