# Linkind ST19 Matter Smart Filament Bulb (850 lm)

*Linkind*

> The ST19 Matter Smart Filament Bulb (850 lm) needs a Matter controller. It is a Matter color ST19 bulb with a spiral filament that needs 2.4 GHz Wi-Fi. It works with HomeKit, Alexa and Google Home. It suits HomeKit, Google Home and Alexa users, with native support through Matter over Wi-Fi.

- Canonical page: https://smarthomecanon.com/devices/linkind-st19-matter-filament-bulb
- Last checked: 2026-10-13

## Key facts

| Fact | Value |
| --- | --- |
| Brand | [Linkind](https://smarthomecanon.com/brands/linkind) |
| Category | Bulb |
| Status | Current[^1] |
| Base | E26 (US standard)[^2] |
| Shape | ST19[^2] |
| Light output | 850 lm[^2] |
| Type | Matter color ST19 bulb with a spiral filament[^2] |
| Radio | Wi-Fi[^2] |
| Matter | Matter over Wi-Fi[^2] |
| Works with | HomeKit, Alexa and Google Home[^2] |
| Released | unknown |

## Integration paths

**How the Linkind ST19 Matter Smart Filament Bulb (850 lm) connects**

| Path | Requires | Local | Features lost |
| --- | --- | --- | --- |
| [Matter / Wi-Fi](https://smarthomecanon.com/protocols/matter-wifi) | 2.4 GHz Wi-Fi network (5 GHz not supported), Matter controller[^2] | unknown | unknown |

**Platform support for the Linkind ST19 Matter Smart Filament Bulb (850 lm)**

| Path | Platform | Support | Integration |
| --- | --- | --- | --- |
| Matter / Wi-Fi | [HomeKit](https://smarthomecanon.com/platforms/homekit) | Native[^2] |  |
| Matter / Wi-Fi | [Google Home](https://smarthomecanon.com/platforms/google-home) | Native[^2] |  |
| Matter / Wi-Fi | [Amazon Alexa](https://smarthomecanon.com/platforms/alexa) | Native[^2] |  |

## Related pages

- [Linkind Matter bulbs](https://smarthomecanon.com/lines/linkind-matter-bulbs) (line)
- [Linkind](https://smarthomecanon.com/brands/linkind) (brand)
- [Matter over Wi-Fi](https://smarthomecanon.com/protocols/matter-wifi) (protocol)
- [HomeKit](https://smarthomecanon.com/platforms/homekit) (platform)
- [Google Home](https://smarthomecanon.com/platforms/google-home) (platform)
- [Amazon Alexa](https://smarthomecanon.com/platforms/alexa) (platform)

## Sources

[^1]: Linkind store: product catalog (product JSON). https://linkind.com/products.json (manufacturer, checked 2026-10-13)
[^2]: Linkind: ST19 Matter Smart Filament Bulb (850 lm) (product page). https://linkind.com/products/linkind-matter-smart-filament-bulb-st19 (manufacturer, checked 2026-10-13)