Shelly Flood Gen4 Leak and Flood Detector

Battery-powered with an estimated two-year battery life, the Shelly Flood Gen4 leak and flood detector monitors sensitive areas of your home using a 2-meter sensor cable that can be extended up to 150 meters. Wi-Fi, Bluetooth 5 and Zigbee compatible, Matter certified and IP44 rated, it works with Apple HomeKit, Google Home, Home Assistant and all major home automation platforms, with no mandatory hub depending on the chosen protocol.

An extendable sensor cable, two detection modes, and three sound alert levels

Where most detectors are limited to the immediate contact area, the Shelly Flood Gen4 leak and flood detector extends its monitoring up to 150 meters thanks to its extendable sensor cable, making it suitable for small spaces like a laundry room as well as large areas like a basement or cellar. Two modes are available depending on the environment: flood detection for enclosed indoor areas, or rain mode for exposed spaces. In case of detection, three levels of audible alert – intense, normal, and economic – adapt to the needs of each installation. Local automations run without an internet connection, and ten webhooks with two URLs per trigger allow sending alerts or triggering actions on other home automation devices.

The Shelly Flood Gen4 leak and flood detector chooses its protocol based on your installation

Multiprotocol connectivity is one of the most useful features of the Shelly Flood Gen4 leak and flood detector: you choose between Wi-Fi 802.11 b/g/n/ax, Bluetooth 5 LE, or Zigbee 802.15.4 depending on your existing infrastructure. The Zigbee range reaches 100 meters indoors and 300 meters outdoors, making it a particularly suitable option for large properties or secondary residences far from the router. Matter certified, it integrates seamlessly into any compatible home automation ecosystem. Its IP44 certification protects it from water splashes and dust, and it operates from -20°C to 40°C for reliable use in unheated spaces like a garage or basement.

FAQ

Is the sensor cable included in the box and can it be extended?

Yes, a 2-meter sensor cable is included. It is extendable up to 150 meters via compatible extensions, allowing you to monitor areas far from the main unit such as a sump, cellar, or buried pipeline.

Does the Shelly Flood Gen4 work without a hub with Apple HomeKit?

No. The Shelly Flood Gen4 absolutely requires a hub to connect to Apple HomeKit. Depending on your configuration, you will need either a compatible Apple hub (HomePod or Apple TV) if configured via the universal Matter ecosystem, or a local software gateway (like Home Assistant) if you use it on your Wi-Fi network.

Are the batteries included in the box?

Yes, the four 1.5V AA batteries are included for immediate use. The estimated battery life is approximately two years depending on usage conditions, alert frequency, and network signal quality.

Specifications