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| Feature | Nest Temperature Sensor (2nd gen) | SwitchBot Indoor/Outdoor Thermo-Hygrometer | Winner |
|---|---|---|---|
| Price | $39.98 | $12.74 | SwitchBot Indoor/Outdoor Thermo-Hygrometer |
| Rating | 4.4 | 4.2 | Nest Temperature Sensor (2nd gen) |
| Battery Life | 3 years | 2 years | Nest Temperature Sensor (2nd gen) |
| Integrations | Google Home | Google Home, Alexa, Apple HomeKit, Samsung SmartThings, Home Assistant, Matter | SwitchBot Indoor/Outdoor Thermo-Hygrometer |
| Sensors | Temperature | Temperature, Humidity | SwitchBot Indoor/Outdoor Thermo-Hygrometer |
| Alerts | None | Temperature Alerts, Humidity Alerts, Low Battery Alerts | SwitchBot Indoor/Outdoor Thermo-Hygrometer |
| Warranty | 1 year | 1 year | Tie |
| Connectivity | Bluetooth | Bluetooth | Tie |
| Screen | NO | NO | Tie |
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
- you need to track humidity as well as temperature
The SwitchBot Indoor/Outdoor Thermo-Hygrometer measures both, while the Nest Temperature Sensor (2nd gen) reads temperature only.
- the sensor has to live in a garage, greenhouse or outdoors
The SwitchBot Indoor/Outdoor Thermo-Hygrometer is IP65 rated for water and dust, where the Nest Temperature Sensor (2nd gen) is indoor only.
- you want smart home alerts and history on their own
The SwitchBot Indoor/Outdoor Thermo-Hygrometer supports temperature, humidity and low-battery alerts plus automations and history, none of which the Nest Temperature Sensor (2nd gen) offers by itself.
- you already own a compatible Nest Thermostat and want it to follow one room
The Nest Temperature Sensor (2nd gen) exists to let a Nest Thermostat heat or cool by the room that matters, with about 3 years of battery life.
- you run Apple Home or Home Assistant and want a sensor in it
The SwitchBot Indoor/Outdoor Thermo-Hygrometer reaches Apple Home through Matter and works with Home Assistant, while the Nest Temperature Sensor (2nd gen) does not.
- + Rating: 4.4
- + Battery Life: 3 years
- - Price: $39.98 vs $12.74
- - Integrations: Google Home vs Google Home, Alexa, Apple HomeKit, Samsung SmartThings, Home Assistant, Matter
- + Price: $12.74
- + Integrations: Google Home, Alexa, Apple HomeKit, Samsung SmartThings, Home Assistant, Matter
- + Sensors: Temperature, Humidity
- - Rating: 4.2 vs 4.4
- - Battery Life: 2 years vs 3 years
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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