# SwitchBot Evaporative Humidifier

*SwitchBot / W3902300*

> For Alexa, HomeKit, Google Home or Home Assistant, the SwitchBot Evaporative Humidifier needs a SwitchBot Hub, because it works with them through Matter. The humidifier itself runs on 2.4 GHz Wi-Fi. It suits Home Assistant users, with native support through Matter over Wi-Fi. HomeKit, Google Home and Alexa users reach it through an integration (a Matter bridge).

- Canonical page: https://smarthomecanon.com/devices/switchbot-evaporative-humidifier
- Last checked: 2026-10-20

## Key facts

| Fact | Value |
| --- | --- |
| Brand | [SwitchBot](https://smarthomecanon.com/brands/switchbot) |
| Category | Humidifier |
| Model numbers | W3902300 |
| Status | Current[^1] |
| Type | Evaporative humidifier[^1] |
| Key spec | 4.5 L tank, up to 750 ml/h, 18 dB sleep mode[^1] |
| Matter | Matter, with a SwitchBot Hub[^1][^2] |
| Hub | Matter needs a hub. Auto Mode needs a Meter or a hub.[^1] |

## Integration paths

**How the SwitchBot Evaporative Humidifier connects**

| Path | Requires | Local | Features lost |
| --- | --- | --- | --- |
| [Matter / Wi-Fi](https://smarthomecanon.com/protocols/matter-wifi) | unknown | unknown | unknown |
| [Matter via Bridge](https://smarthomecanon.com/protocols/matter-bridged) | SwitchBot Hub Mini (Matter Enabled), Hub 2 or Hub 3, A Matter controller on your platform, such as a HomePod or Apple TV for HomeKit[^1][^2] | unknown | unknown |
| [BLE](https://smarthomecanon.com/protocols/ble) | withheld | withheld | unknown |
| [Wi-Fi cloud](https://smarthomecanon.com/protocols/wifi-cloud) | withheld | No[^3] | unknown |

**Platform support for the SwitchBot Evaporative Humidifier**

| Path | Platform | Support | Integration |
| --- | --- | --- | --- |
| Matter / Wi-Fi | [Home Assistant](https://smarthomecanon.com/platforms/home-assistant) | withheld |  |
| Matter via Bridge | [Amazon Alexa](https://smarthomecanon.com/platforms/alexa) | Via integration[^1] |  |
| Matter via Bridge | [HomeKit](https://smarthomecanon.com/platforms/homekit) | Via integration[^1] |  |
| Matter via Bridge | [Google Home](https://smarthomecanon.com/platforms/google-home) | Via integration[^1] |  |
| Matter via Bridge | [Home Assistant](https://smarthomecanon.com/platforms/home-assistant) | Via integration[^1] |  |
| BLE | [Home Assistant](https://smarthomecanon.com/platforms/home-assistant) | withheld | SwitchBot Bluetooth |
| Wi-Fi cloud | [Home Assistant](https://smarthomecanon.com/platforms/home-assistant) | withheld | SwitchBot Cloud |
| Wi-Fi cloud | [Homey](https://smarthomecanon.com/platforms/homey) | withheld | com.switchbot |

## Related pages

- [SwitchBot air and climate](https://smarthomecanon.com/lines/switchbot-air-and-climate) (line)
- [SwitchBot](https://smarthomecanon.com/brands/switchbot) (brand)
- [Matter over Wi-Fi](https://smarthomecanon.com/protocols/matter-wifi) (protocol)
- [Matter through a bridge](https://smarthomecanon.com/protocols/matter-bridged) (protocol)
- [Bluetooth Low Energy](https://smarthomecanon.com/protocols/ble) (protocol)
- [Wi-Fi through a cloud service](https://smarthomecanon.com/protocols/wifi-cloud) (protocol)
- [Home Assistant](https://smarthomecanon.com/platforms/home-assistant) (platform)
- [Amazon Alexa](https://smarthomecanon.com/platforms/alexa) (platform)
- [HomeKit](https://smarthomecanon.com/platforms/homekit) (platform)
- [Google Home](https://smarthomecanon.com/platforms/google-home) (platform)
- [Homey](https://smarthomecanon.com/platforms/homey) (platform)

## Sources

[^1]: SwitchBot Evaporative Humidifier - SwitchBot US store. https://us.switch-bot.com/products/switchbot-evaporative-humidifier (manufacturer, checked 2026-10-12)
[^2]: SwitchBot Matter support page. https://www.switch-bot.com/pages/matter (manufacturer, checked 2026-10-12)
[^3]: SwitchBot API (OpenWonderLabs/SwitchBotAPI). https://github.com/OpenWonderLabs/SwitchBotAPI (manufacturer, checked 2026-10-12)