# Netatmo Additional Smart Radiator Valve

*Netatmo*

> The Additional Smart Radiator Valve controls one hot-water radiator and runs on 2 AA batteries. It needs the Smart Thermostat, the Smart Modulating Thermostat or the Smart Radiator Valves starter pack, and it does not work with the ORIGINAL thermostat. It suits HomeKit, Google Home and Alexa users, with native support through the maker's hub. Home Assistant users reach it through an integration (the maker's hub).

- Canonical page: https://smarthomecanon.com/devices/netatmo-additional-smart-radiator-valve
- Last checked: 2026-10-20

## Key facts

| Fact | Value |
| --- | --- |
| Brand | [Netatmo](https://smarthomecanon.com/brands/netatmo) |
| Category | Thermostat |
| Status | Current[^1] |
| Kind | Radiator valve[^1] |
| Connectivity | 868 MHz radio to the thermostat or relay[^1] |
| Power | 2 AA batteries (2 years)[^1] |
| Works with | HomeKit, Alexa, Google Home[^2] |
| Released | unknown |

## Integration paths

**How the Netatmo Additional Smart Radiator Valve connects**

| Path | Requires | Local | Features lost |
| --- | --- | --- | --- |
| [Proprietary + hub](https://smarthomecanon.com/protocols/proprietary-gateway) | Smart Thermostat, Smart Modulating Thermostat or Smart Radiator Valves starter pack[^1] | unknown | unknown |

**Platform support for the Netatmo Additional Smart Radiator Valve**

| Path | Platform | Support | Integration |
| --- | --- | --- | --- |
| Proprietary + hub | [HomeKit](https://smarthomecanon.com/platforms/homekit) | Native[^2] |  |
| Proprietary + hub | [Amazon Alexa](https://smarthomecanon.com/platforms/alexa) | Native[^2] |  |
| Proprietary + hub | [Google Home](https://smarthomecanon.com/platforms/google-home) | Native[^2] |  |
| Proprietary + hub | [Home Assistant](https://smarthomecanon.com/platforms/home-assistant) | withheld | netatmo |
| Proprietary + hub | [Homey](https://smarthomecanon.com/platforms/homey) | withheld | com.netatmo |

## Related pages

- [Netatmo thermostats, radiator valves and AC controller](https://smarthomecanon.com/lines/netatmo-thermostats-and-valves) (line)
- [Netatmo](https://smarthomecanon.com/brands/netatmo) (brand)
- [Proprietary radio with a hub](https://smarthomecanon.com/protocols/proprietary-gateway) (protocol)
- [HomeKit](https://smarthomecanon.com/platforms/homekit) (platform)
- [Amazon Alexa](https://smarthomecanon.com/platforms/alexa) (platform)
- [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]: Netatmo: Additional Smart Radiator Valve (product page and technical specifications). https://www.netatmo.com/en-eu/additional-smart-radiator-valve (manufacturer, checked 2026-10-13)
[^2]: Netatmo: Smart Thermostat page (heating comparison table, Smart home integrations row). https://www.netatmo.com/en-eu/smart-thermostat (manufacturer, checked 2026-10-20)