The Shelly Flood S Gen4 is an advanced smart water leak sensor designed to detect leaks before they cause expensive damage. Equipped with Wi-Fi, Zigbee 3.0, Bluetooth, and Matter support, it provides real-time notifications and seamlessly integrates into modern smart home setups.
Featuring stainless-steel sensing pads and an IP67-rated enclosure, it accurately identifies low-conductivity water, clean drips, or rainfall in both indoor and outdoor environments.
The sensor supports local automations to shut off smart valves or trigger alarms independently of cloud connectivity, delivering up to 2 years of reliable battery life.
Key Features
Brand: Shelly
Product Type: Water Leak Sensor
Protocol: Wi-Fi, Zigbee, Bluetooth, Matter
Model: Shelly Flood S Gen4
MPN: FG3800238073701
GTIN: 3800238073701
Ingress Protection Rating: IP67
Power Source: Battery Powered
Battery Life: Up to 2 years
Built-in Alarm: Audible Buzzer
Sensor Material: Stainless Steel
Highlights
The Shelly Flood S Gen4 continuously monitors areas that are most vulnerable to leaks. Its large stainless-steel sensing pads provide fast and accurate water leak detection, even for condensate, distilled water, or small drips that many traditional sensors may miss.
Compatibility
Compatible with Shelly Smart Control, Home Assistant, and major smart home ecosystems via Wi-Fi, Zigbee 3.0, and Matter.
How to use
Integrate the smart water leak sensor into a home automation system. When a leak is detected, automatically close a compatible smart water valve, switch off connected appliances, activate alarms, or send instant alerts to a smartphone.
Local automations allow critical safety routines to continue operating even without cloud connectivity.
Frequently asked questions
What is the Shelly Flood S Gen4?
The Shelly Flood S Gen4 is a battery-powered smart water leak sensor that detects leaks, sends instant alerts, and connects via Wi-Fi, Zigbee, Bluetooth, or Matter.
Where should the Shelly Flood S Gen4 be placed?
It is best positioned in leak-prone areas such as under washing machines, dishwashers, sinks, water heaters, boilers, and air conditioning condensate trays.
Can the sensor operate without cloud connectivity?
Yes, it supports local automations and functions directly within your local smart home network without relying on cloud services.
Which wireless protocols does the device support?
The sensor supports Wi-Fi 6, Zigbee 3.0, Bluetooth 5 LE, and Matter over Wi-Fi for broad compatibility with major smart home platforms.
