Shelly Flood Gen4 – Catch a Leak Before It Becomes a Disaster
A leaking washing machine, a dripping pipe or water escaping under the kitchen sink can cause serious damage before anyone notices.
The Shelly Flood Gen4 is a smart water sensor designed to detect unwanted moisture and alert you through your smart-home system.
Small, discreet and easy to position, it gives you an extra layer of protection in places where leaks can go unnoticed.
Smart Protection for Your Home
Position the sensor cable near areas where water might escape, such as under a sink, beside a washing machine or around a dishwasher.
When water reaches the detection cable, the sensor can trigger an alert, giving you an opportunity to investigate before the problem gets worse.
More Than Just a Water Alarm
The Shelly Flood Gen4 combines smart connectivity with a flexible detection cable, allowing you to monitor vulnerable areas rather than relying on a single detection point.
It's also suitable for monitoring unwanted water around windows, utility rooms and other areas exposed to moisture.
Why We Think It's Cool
Because some of the most useful technology is the kind you hope you'll never need.
A small water sensor could alert you to a leak before it turns into an expensive repair.
And unlike a traditional water alarm that you might not hear when you're away, smart notifications can help you stay informed remotely when the device is correctly connected and configured.
Technical Highlights
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2-metre water-detection cable included, sensing moisture along its length
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Expandable up to 150 metres with additional cables
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Wi-Fi, Bluetooth and Zigbee connectivity
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Matter-certified for compatible smart-home systems
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Smartphone notifications and built-in audible alarm
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Flood Detection and Rain Detection modes
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Three configurable flood alarm settings
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IP44-rated splash resistance
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Powered by 4 × AA batteries, included
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Approx. two-year battery life, depending on usage
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Compatible with Shelly Smart Control and supported smart-home platforms
