Shelly Announces Forthcoming Matter Water Leak Sensor
Shelly has announced the Flood S Gen4, an updated version of its original water leak sensor designed to monitor areas where leaks are likely to occur, such as under sinks, next to washing machines, or near boilers and water heaters. The new model adds Matter compatibility.
The sensor uses large stainless-steel detection strips on the underside of the unit to identify the presence of water. According to Shelly, the enlarged contact surface allows the device to detect even small amounts of water quickly, helping to reduce the time between the start of a leak and the moment a warning is issued. When water is detected, the Flood S Gen4 sends an instant notification to a paired smartphone, while also triggering an integrated local alarm with both sound and light indicators. This combination allows the sensor to alert occupants in the home as well as users who may be away.
To help manage battery life, the device offers three configurable alarm profiles, allowing users to choose between faster detection or longer operating life. Leak sensors typically remain idle for long periods, so these profiles are intended to give users some control over how actively the device checks for water while still maintaining reliable detection.
One of the more notable changes compared to earlier Shelly leak sensors is broader connectivity support. The Flood S Gen4 includes Matter over WiFi integration, which means it’ll be able to integrate with platforms that support the standard, including Apple Home, Amazon Alexa, Google Home, and Samsung SmartThings.
Alongside Matter, the device also supports WiFi (without Matter), Zigbee, and Bluetooth, giving users several ways to connect it depending on their existing setup. Wi-Fi allows direct connection to the network without a hub, while Zigbee support may appeal to users who prefer low-power mesh networks. Bluetooth can be used for initial setup and short-range communication.
This range of connection options means the Flood S Gen4 can operate within the Shelly ecosystem or alongside other smart home platforms, depending on how users prefer to deploy it.
Water leak sensors are typically placed in locations that are rarely checked but prone to problems, such as behind appliances, beneath sinks, or near water tanks. Early detection can help prevent more serious damage, particularly in homes where a leak might otherwise go unnoticed for several hours. With its updated connectivity options and local alarm capability, the Flood S Gen4 is positioned as a compact monitoring device intended to provide early warning of potential water leaks, helping users respond before minor issues develop into more costly repairs.
As this is a forthcoming product, alongside a slew of other releases from the company, there’s no mention of a release date or pricing just yet.
