# SwitchBot Water Leak Detector

*SwitchBot / W4402000*

> The SwitchBot Water Leak Detector is an IP67 leak sensor that connects straight to Wi-Fi, so you need no hub. It sends alerts to the phone and runs on batteries. It suits Home Assistant users through an integration (a Matter bridge).

- Canonical page: https://smarthomecanon.com/devices/switchbot-water-leak-detector
- Last checked: 2026-10-20

## Key facts

| Fact | Value |
| --- | --- |
| Brand | [SwitchBot](https://smarthomecanon.com/brands/switchbot) |
| Category | Leak sensor |
| Model numbers | W4402000 |
| Status | Current[^1] |
| Type | Leak sensor[^2] |
| Measures | Dripping water, immersion and water level[^2] |
| Radio | Wi-Fi[^2] |
| Power | Battery, up to 2 years[^2] |
| Hub | No hub needed[^2] |
| Matter | Through a SwitchBot hub (Hub 2, Hub 3 or Hub Mini Matter Enabled)[^3] |
| Key spec | IP67 waterproof[^2] |

## Integration paths

**How the SwitchBot Water Leak Detector connects**

| Path | Requires | Local | Features lost |
| --- | --- | --- | --- |
| [Matter via Bridge](https://smarthomecanon.com/protocols/matter-bridged) | SwitchBot Hub 2, Hub 3 or Hub Mini (Matter Enabled), A Matter controller on your platform, such as a HomePod or Apple TV for HomeKit[^3] | unknown | unknown |
| [BLE](https://smarthomecanon.com/protocols/ble) | withheld | withheld | unknown |
| [Wi-Fi cloud](https://smarthomecanon.com/protocols/wifi-cloud) | SwitchBot app and a Wi-Fi network[^2] | unknown | unknown |

**Platform support for the SwitchBot Water Leak Detector**

| Path | Platform | Support | Integration |
| --- | --- | --- | --- |
| Matter via Bridge | [Home Assistant](https://smarthomecanon.com/platforms/home-assistant) | withheld |  |
| BLE | [Home Assistant](https://smarthomecanon.com/platforms/home-assistant) | withheld | SwitchBot Bluetooth |
| BLE | [Homey](https://smarthomecanon.com/platforms/homey) | withheld | com.switchbot |
| 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 meters and sensors](https://smarthomecanon.com/lines/switchbot-meters-and-sensors) (line)
- [SwitchBot](https://smarthomecanon.com/brands/switchbot) (brand)
- [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)
- [Homey](https://smarthomecanon.com/platforms/homey) (platform)

## Sources

[^1]: SwitchBot Water Leak Detector - SwitchBot US store. https://us.switch-bot.com/products/switchbot-water-leak-detector (manufacturer, checked 2026-10-10)
[^2]: SwitchBot Water Leak Detector product page. https://www.switch-bot.com/products/switchbot-water-leak-detector (manufacturer, checked 2026-10-10)
[^3]: SwitchBot Matter support page. https://www.switch-bot.com/pages/matter (manufacturer, checked 2026-10-10)