TP-Link Tapo T300 Review: Is This Smart Water Leak Sensor Worth It?

A small leak under a sink or beside a washing machine can go unnoticed until it damages flooring, cupboards or belongings. A smart water leak detector is designed to spot water early and alert you, including when you are away from home. For UK households already using TP-Link’s Tapo ecosystem, the Tapo T300 Smart Water Leak Sensor is a compact option worth considering—but there is one important catch: it requires a compatible Tapo hub.

This guide covers what the Tapo T300 does, where it could be useful, what you need to buy alongside it, and what to check before choosing a smart leak sensor. This is a specification-based guide, not a hands-on test; confirm the current details with the manufacturer before ordering.

Current price and deal

The listed deal price is £17.99, down from the £22.99 RRP — a saving of about 22%. Prices and availability can change, so check the live listing before buying.

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What is the Tapo T300 smart water leak sensor?

The Tapo T300 is a wireless sensor designed to detect drips and leaks. TP-Link says it uses six detection probes on the top and bottom, has a built-in alarm rated up to 90 dB, and carries an IP67 water- and dust-resistance rating. When connected to a Tapo hub, it can send an alert through the Tapo app and trigger the hub’s alarm.

It is intended for places where water might escape unnoticed, such as beneath a kitchen sink, beside a washing machine, near a bath or close to plumbing connections. It can help you react sooner, but it does not shut off the water supply by itself and cannot guarantee that water damage will be prevented.

The important catch: you need a Tapo hub

Do not assume the Tapo T300 works on its own over Wi-Fi. TP-Link states that a compatible Tapo hub is required; the sensor package does not include one. The manufacturer lists the Tapo H100 and H200 as compatible options. If you do not already own a suitable hub, include that extra cost in your comparison before buying the sensor.

This requirement is the main buying consideration. A low sensor price can look attractive, but the total cost is higher if you need to add a hub. Check the product listing and compatibility information for your exact region and hub model.

Key features at a glance

• Leak detection: six probes on the top and bottom are designed to detect drips and water reaching the sensor.
• Audible warning: a built-in alarm can be adjusted up to 90 dB.
• Phone notifications: the Tapo app can notify you when a leak is detected and when the batteries are low, with the required hub connected.
• IP67 rating: the housing is rated for dust protection and temporary immersion under specified test conditions. It is not a reason to leave the sensor permanently submerged.
• Battery power: it uses two replaceable AAA batteries. Battery-life estimates vary by operating conditions and how the device is used, so treat manufacturer figures as estimates rather than guarantees.
• Flexible placement: TP-Link lists a lanyard, adhesive and magnets for positioning the sensor.

Where should you place a smart leak detector?

Choose locations where a leak could start and where water would reach the sensor early. Useful places to consider include:

• Under the kitchen sink, near the waste pipe or water connections.
• Beside a washing machine or dishwasher, without obstructing ventilation or access.
• Near a bath, shower or bathroom vanity where small leaks might go unnoticed.
• Close to accessible plumbing joints or a water filter, following the appliance and sensor instructions.

Keep the sensor accessible for battery changes and testing. Avoid placing it somewhere that is routinely wet during normal use, and follow the installation guidance for the exact location. After setup, test the alarm and app notification so you know what to expect.

Pros and cons

Potential advantages

• Compact, battery-powered design for locations without a nearby power socket.
• Local audible alarm plus app alerts when connected to the required hub.
• Top-and-bottom detection probes and an IP67-rated housing.
• May fit conveniently into a home that already uses compatible Tapo devices.

Things to consider

• A compatible Tapo hub is required and sold separately.
• The sensor alerts you to water; it does not automatically close a stopcock.
• Battery life and notification reliability depend on conditions, setup and connectivity.
• If you use another smart-home platform, check compatibility carefully before purchasing; do not assume every hub or automation system will work.

Is the Tapo T300 worth considering?

The Tapo T300 is most worth shortlisting if you want a simple leak alert and already have a compatible Tapo hub. Its combination of an onboard siren, app notifications and a compact battery-powered body makes sense for under-sink and laundry-area monitoring.

If you would need to buy a hub as well, compare the full bundle price with other smart leak sensors before deciding. If your priority is automatic water shut-off rather than an alert, look for a system specifically designed to operate a shut-off valve; the Tapo T300 alone does not provide that function.

You can also explore our guides to TP-Link Kasa smart plugs, smart power strips and smart heating controls if you are building out a connected home.

Frequently asked questions

Does the Tapo T300 work without a hub?

No. TP-Link says a compatible Tapo hub is required for the sensor to work as intended and provide its connected alerts. The hub is sold separately.

Can the Tapo T300 stop a leak automatically?

No. It detects water and can sound an alarm or send an alert, but it does not close a water valve. You would need a separate compatible shut-off system for that function.

Is the Tapo T300 waterproof?

It has an IP67 rating, according to TP-Link. This rating describes protection under defined test conditions; follow the manufacturer’s instructions and do not treat the device as suitable for permanent submersion.

Where can I check the current price and compatibility?

Check the latest price on Amazon and compare the total cost of the sensor and any compatible Tapo hub before buying. Prices, stock and compatibility details can change.