# Google Nest Temperature Sensor (2nd gen)

*Google*

> The Nest Temperature Sensor (2nd gen) needs a Nest Learning Thermostat (4th or 3rd gen) or a Nest Thermostat E to report to. It is a Bluetooth LE room temperature sensor. It suits Google Home users, with native support through the maker's hub. It does not support Home Assistant.

- Canonical page: https://smarthomecanon.com/devices/google-nest-temperature-sensor-2nd-gen
- Last checked: 2026-10-20

## Key facts

| Fact | Value |
| --- | --- |
| Brand | [Google](https://smarthomecanon.com/brands/google) |
| Category | Temperature and humidity sensor |
| Status | Current[^1] |
| Works with | Nest Learning Thermostat (4th gen), Nest Learning Thermostat (3rd gen), Nest Thermostat E[^1] |
| Measures | Temperature only[^1] |
| Released | 2024-08-20[^2] |
| Radio | Bluetooth LE[^1] |
| Power | One CR2 3 V lithium battery, up to 3 years[^1] |
| Limit | Up to 6 per thermostat and 18 per home[^1] |
| App | Google Home app or Nest app[^1] |

## Integration paths

**How the Google Nest Temperature Sensor (2nd gen) connects**

| Path | Requires | Local | Features lost |
| --- | --- | --- | --- |
| [Proprietary + hub](https://smarthomecanon.com/protocols/proprietary-gateway) | Compatible Nest thermostat, Google Home app[^1] | unknown | unknown |

**Platform support for the Google Nest Temperature Sensor (2nd gen)**

| Path | Platform | Support | Integration |
| --- | --- | --- | --- |
| Proprietary + hub | [Google Home](https://smarthomecanon.com/platforms/google-home) | Native[^1] |  |
| Proprietary + hub | [Home Assistant](https://smarthomecanon.com/platforms/home-assistant) | withheld | nest |
| Proprietary + hub | [Homey](https://smarthomecanon.com/platforms/homey) | withheld | com.eyecatch.googlenest.starling |

## Releases

**Google Nest Temperature Sensor (2nd gen) release events**

| Date | Event | Detail |
| --- | --- | --- |
| 2024-08-06[^2] | Announced |  |
| 2024-08-20[^2] | Released | Availability date given for the Nest Learning Thermostat (4th gen) bundle. |

## Related pages

- [Google](https://smarthomecanon.com/brands/google) (brand)
- [Proprietary radio with a hub](https://smarthomecanon.com/protocols/proprietary-gateway) (protocol)
- [Google Home](https://smarthomecanon.com/platforms/google-home) (platform)
- [Home Assistant](https://smarthomecanon.com/platforms/home-assistant) (platform)
- [Homey](https://smarthomecanon.com/platforms/homey) (platform)

## Sources

[^1]: Google Store (US): Nest Temperature Sensor (2nd gen) specs and compatibility. https://store.google.com/us/product/nest_temperature_sensor_2nd_gen?hl=en-US (manufacturer, checked 2026-10-11)
[^2]: Google blog, 6 Aug 2024: The Nest Learning Thermostat is smarter and sleeker than ever. https://blog.google/products/google-nest/new-learning-thermostat/ (manufacturer, checked 2026-10-11)