Description
A smart water leak detector that alerts your phone the instant water reaches its sensing probes. Two variants available: WiFi (direct to your home network via the Tuya / SmartLife app, no hub needed) and Zigbee (pairs to Home Assistant, SmartThings, Hubitat, Hue Bridge, or any Zigbee 3.0 coordinator).
Escape of water is the most common type of domestic property damage claim in the UK – ahead of fire and theft. Sources include burst washing machine hoses, dishwasher pipe failures, boiler leaks, frozen pipe ruptures, and toilet overflow. A traditional water alarm only helps if someone is home to hear it. A smart leak sensor sends an instant notification to your phone wherever you are, and – paired with our Smart Water Shut-Off Valve – can close the mains supply automatically.
Where to place it
- Under the kitchen sink – catches dishwasher hose, tap, and waste pipe failures.
- Behind the washing machine – the #1 source of indoor water damage. Hoses fail without warning.
- Next to the boiler / hot water cylinder – early warning on pressure relief discharge or pipework failures.
- Bathroom floor – catches toilet overflow, shower tray leaks, basin overflow.
- Loft (near the tank) – cold water storage tank float-valve failures can flood the loft and ceilings below.
- Garage / utility room – freezer defrost overflow, outside tap freeze damage.
- Holiday home / second property – critical when no one is on site to notice a leak in person.
WiFi or Zigbee – which variant to choose
Pick WiFi if: You don’t have a smart-home hub and just want notifications to the Tuya / SmartLife app on your phone. Easiest setup, no extra hardware. Direct connection to your router – needs a strong 2.4 GHz WiFi signal at the sensor location.
Pick Zigbee if: You run Home Assistant or any Zigbee hub. Local control, no cloud dependency, much better battery life (Zigbee uses far less power than WiFi). Zigbee mesh also propagates the alert even from places where WiFi signal is patchy (loft, basement, garage).
Automatic shut-off integration
Paired with our Smart Water Shut-Off Valve, the detector can trigger automatic mains shut-off when water is detected. Setup:
- Pair both the leak sensor and the shut-off valve to the same hub (Home Assistant for Zigbee, Tuya / SmartLife for WiFi).
- Create an automation: “When leak sensor changes to wet → close shut-off valve”.
- Optional: add SMS / push notification, lights flashing red, smart speaker announcement.
End-to-end response time from leak detection to valve closing is typically under 5 seconds.
Hub compatibility (Zigbee variant)
- Home Assistant (Zigbee2MQTT or ZHA) – fully local, separate entities for wet / dry state and battery.
- SmartThings – paired via the Generic Zigbee Water Leak Sensor driver.
- Hubitat – built-in driver, exposes water leak alerts.
- Philips Hue Bridge – paired as a third-party device.
Battery life
- WiFi variant: 2 × AAA batteries, 6-12 months typical life.
- Zigbee variant: 1 × CR2032 battery, 6-12 months typical life.
Sees to be well built, initially thought the battery was flat, but they have out a plastic peace between the battery and connectors, so all good there. The screw covers is a great addition to the design, I am assuming for water ingress. Quick test seemed alright, water detected even from small amount.
Bit fiddly to set up but once you have done one it is easier
Not the ones I wanted but too much hassle to return
Works as expected
Not used yet
Not fitted it yet
Second one I’ve ordered. A bit fiddly to set up but works well. Phone alerts cost extra but reasonably priced.
Good value item, works really well. So called User Manual is useless; doesn’t even show where reset button is. Took several tries to detect device but no problem once detected. Website does not mention that phone alerts cost extra.