GoKawiilShelly launches sub-$30 Matter leak sensor with Apple Home support
Shelly has released the Flood S Gen4, a Matter-certified water leak sensor priced under $30 that works natively with Apple Home, Google Home, Alexa, SmartThings, and Home Assistant. The device uses three large stainless steel contact pads instead of small metal pins, allowing it to detect water faster and even sense low-conductivity liquids like AC condensate.
GoKawiil's interpretation of the reporting above, not reported fact.
Cheap, reliable leak detection has long been an underrated smart home category, and broad Matter support means buyers no longer have to worry about ecosystem lock-in when choosing a sensor. Combining a low price with a redesigned sensing surface could push more households to adopt leak protection in high-risk spots like water heaters and washing machines, potentially preventing costly water damage.
- Flood S Gen4 costs under $30 and is Matter-certified for cross-platform compatibility.
- Its wider stainless steel pads detect leaks faster and even sense low-conductivity water like AC condensate.
- Apple Home integration enables automations such as cutting power to appliances or triggering alerts and lights when a leak is found.
Shelly Flood S Gen4 Water Leak Sensor — This is the exact sensor the article highlights: a Matter-certified leak detector that pairs with Apple Home right out of the box. Its three large stainless steel pads span the base so water gets detected across a wider area, and the low-profile body slips under water heaters, washers, and behind toilets.
See Shelly Flood S Gen4 Water Leak Sensor on Amazon → Affiliate link — we may earn a commission on purchases, at no extra cost to you. Product picked by AI based on this article; it is not a tested recommendation.Source: 9to5mac.com — Bradley C, 2026-09-11
Published there as: “HomeKit Weekly: Shelly’s Flood S Gen4 is a low cost Matter leak sensor for Apple Home”
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