# Aqara Light Switch H2 US

*Aqara / WS-K02E, WS-K03E, WS-K04E*

> In Thread mode, the Aqara Light Switch H2 US (WS-K02E, WS-K03E, WS-K04E) needs a Thread border router and Matter controller but no Aqara hub. It uses native Matter over Thread, also supports Zigbee, and works with or without a neutral wire. It suits HomeKit, Google Home and Alexa users, with native support through Matter over Thread. Home Assistant users get native support through Zigbee.

- Canonical page: https://smarthomecanon.com/devices/aqara-light-switch-h2-us
- Last checked: 2026-10-20

## Key facts

| Fact | Value |
| --- | --- |
| Brand | [Aqara](https://smarthomecanon.com/brands/aqara) |
| Category | Switch |
| Model numbers | WS-K02E, WS-K03E, WS-K04E |
| Status | Current[^1] |
| Group | Wall switches and dimmers[^1] |
| Radio | withheld |
| Hub needed | withheld |
| Matter path | withheld |
| Neutral wire | withheld |
| Region and load | US, 110-240 VAC 50/60 Hz, 10 A resistive. Minimum load 5 W without neutral.[^2] |
| Power or battery | Mains[^2] |
| Key difference | Channels vary by model: WS-K02E is 2 buttons and 1 channel, WS-K03E is 2 buttons and 2 channels, WS-K04E is 4 buttons and 3 channels. 119 x 74 x 42 mm across the family.[^2] |
| Released | withheld |

## Integration paths

**How the Aqara Light Switch H2 US connects**

| Path | Requires | Local | Features lost |
| --- | --- | --- | --- |
| [Matter / Thread](https://smarthomecanon.com/protocols/matter-thread) | withheld | unknown | unknown |
| [Zigbee](https://smarthomecanon.com/protocols/zigbee) | withheld | unknown | unknown |

**Platform support for the Aqara Light Switch H2 US**

| Path | Platform | Support | Integration |
| --- | --- | --- | --- |
| Matter / Thread | [HomeKit](https://smarthomecanon.com/platforms/homekit) | Native[^3] |  |
| Matter / Thread | [Amazon Alexa](https://smarthomecanon.com/platforms/alexa) | Native[^3] |  |
| Matter / Thread | [Google Home](https://smarthomecanon.com/platforms/google-home) | Native[^3] |  |
| Zigbee | [Home Assistant](https://smarthomecanon.com/platforms/home-assistant) | withheld | zigbee2mqtt |
| Zigbee | [Homey](https://smarthomecanon.com/platforms/homey) | withheld | ai.zigbee.aqara |

## Related pages

- [Aqara switches, plugs and lights](https://smarthomecanon.com/lines/aqara-switches-plugs-and-lights) (line)
- [Aqara](https://smarthomecanon.com/brands/aqara) (brand)
- [Matter over Thread](https://smarthomecanon.com/protocols/matter-thread) (protocol)
- [Zigbee](https://smarthomecanon.com/protocols/zigbee) (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]: Aqara US: Smart Controllers category listing. https://www.aqara.com/us/product/controller/ (manufacturer, checked 2026-10-08)
[^2]: Aqara US: Light Switch H2 US specs. https://www.aqara.com/us/product/light-switch-h2-us-specs/ (manufacturer, checked 2026-10-08)
[^3]: Aqara US store: Light Switch H2. https://us.aqara.com/products/aqara-light-switch-h2-us.json (manufacturer, checked 2026-10-12)