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TP-Link
TP-Link Tapo T300 Water Leak Sensor
- Native integration
- Local control
- Wi-Fi
Prices verified November 2026
See more sensors picks on our Amazon storefront →Our verdict
A low-cost leak sensor, but it is not standalone: it needs a Tapo hub such as the H100, which also provides the siren. Worth it if you already run a Tapo hub, less so if you are starting from scratch when a Zigbee sensor would not need one.
What can Home Assistant control on the TP-Link Tapo T300 Water Leak Sensor?
| Control | Type | What it does |
|---|---|---|
| Water leak | Binary sensor | Reports a leak detected |
| Battery | Sensor (read-only) | Low battery state |
It connects to the Tapo hub, and Home Assistant's built-in TP-Link integration discovers the hub on your network and exposes its child devices, using your Tapo account credentials to authenticate locally. Support for individual child devices can lag the app, so check the leak and battery entities appear after setup.
How does the TP-Link Tapo T300 Water Leak Sensor compare?
| Product | From | Protocol | Local control | Integration |
|---|---|---|---|---|
| TP-Link Tapo T300 Water Leak Sensor (this product) | £17.99 | Wi-Fi | Yes | Native |
| Aico Ei3016 (Mains Optical Smoke Alarm) | £53.89 | Wi-Fi | Cloud | HACS |
| Airthings View Plus | £259 | Wi-Fi, Bluetooth | Cloud | Native |
| Apollo Automation MSR-2 mmWave Multisensor | £38.7 | Wi-Fi, Bluetooth | Yes | Native |
Frequently asked questions
- Does the TP-Link Tapo T300 Water Leak Sensor work with Home Assistant locally?
- Yes. The TP-Link Tapo T300 Water Leak Sensor is controlled locally in Home Assistant through a built-in Home Assistant core integration (TP-Link Smart Home), so it keeps working if your internet connection or the TP-Link cloud goes down. Control and state updates stay on your own network.
- Which protocol does the TP-Link Tapo T300 Water Leak Sensor use, and do I need a hub?
- The TP-Link Tapo T300 Water Leak Sensor uses Wi-Fi. To pair it with Home Assistant you need no hub — it joins your Wi-Fi network directly. TP-Link's own hub is not required when you integrate through a built-in Home Assistant core integration (TP-Link Smart Home).
- How much does the TP-Link Tapo T300 Water Leak Sensor cost in the UK?
- The lowest price we have listed for the TP-Link Tapo T300 Water Leak Sensor is £17.99 at Amazon UK. Prices were last checked in November 2026 and change often, so confirm on the retailer's page before buying.
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TP-Link
TP-Link Tapo T300 Water Leak Sensor
£17.99 at Amazon UK