Shelly Flood Gen4

Device identification

• Device name: Shelly Flood Gen4

• Device model: S4SN-0071A

• Device SSID: ShellyFloodG4-XXXXXXXXXXXX

• BLE ID: 0x1822

Short description

The Shelly Flood Gen4 alerts you when water appears where it shouldn’t - such as under your water heater, dishwasher, or washing machine. It comes with an innovative leak sensor cable that detects water along its entire length, covering larger areas and identifying leaks beyond a single point for unmatched protection in your home. Multiple leak sensor cables can be connected, extending coverage up to 150 meters.

Receive instant alerts directly to your mobile device and customize safety protocols to protect your family and property.

Shelly Flood Gen4 offers Wi-Fi, Zigbee, and Bluetooth connectivity. It also includes a built-in web interface for easy monitoring, control, and settings adjustments.

Main features

• Leak detection for smaller and larger areas via extendable leak sensor cable

• Supports two modes: Flood Detection and Rain Detection

• Three built-in flood alarm modes: Intense, Normal, and Economic

• Remote notifications and built-in buzzer for local alerts

• Battery-powered for flexibility and uninterrupted operation

• IP44 protection for durability and environmental resistance

• Broad compatibility with third-party home automation systems

• Supports local automation actions for independent operation

• Support for Shelly Cloud and Shelly Smart Control app

Use cases

• Immediate Flood Detection
  Receive instant alerts when Shelly Flood Gen4 detects water in areas like basements, bathrooms, or laundry rooms, enabling quick action to prevent damage.

• Protect Your Home from Water Damage
  Place Shelly Flood Gen4 near vulnerable appliances or plumbing systems. If a leak occurs, you’ll be alerted in real time, helping to minimize potential damage.

• Monitor High-Risk Areas
  Easily install Shelly Flood Gen4 in any room where flooding is a concern, such as kitchens or under sinks, and receive notifications through your phone without complex setup.

• Automatic Appliance Shutoff
  Integrate Shelly Flood Gen4 sensor with smart devices to automatically turn off washing machines or dishwashers when a flood is detected, preventing further water damage.

• Detect Pipe Leaks Early
  Run the leak sensor cable along a suspect pipe to quickly detect the presence of a leak, helping you take action before damage spreads.

Main applications

• Residential

• MDU (Multi Dwelling Units - apartments, condominiums, hotels, etc.)…

• Light commercial (small office buildings, small retail/restaurant/gas station, etc.)…

• Government/municipal

• University/college

• Farming

Integrations

Amazon Alexa supported capabilities

• Contact Sensor

Google Smart Home supported traits

• Sensor State

Samsung SmartThings supported capabilities

• Battery

• Water Sensor

Connectivity

• Wi-Fi

• Bluetooth

• Zigbee

• Matter

Accessories

• Shelly Leak Sensor Cable: 1 pc included with Shelly Flood Gen4

• Shelly Cable Bracket: 10 pcs per package, sold separately

User interface

Inputs

• LED Button:

  • Press 1 time: Wakes up the device for 3 minutes. The LED turns on and initiates a state report.

    • Press 1 time: Reports status of the Flood component.

    • Press 2 times rapidly: Sends the device to sleep.

    • Press 3 times rapidly: Puts the device in Zigbee inclusion mode. It stays in this mode for 3 minutes and you can find it in the Home Automation platform through the Zigbee Hub.

    • Press 5 times rapidly: Switch the Device from Matter firmware (default) to Zigbee, or back.

    • Press and hold for 5 seconds: Network reset. The LED flashes slowly. If no action is taken within 3 minutes, the device retains its existing settings.

    • Press and hold for 10 seconds: Resets the device to factory settings.

Outputs

• Buzzer

  • Long beep (3.5 sec ON / 1.5 sec OFF): Indicates flood detection.

  • Short beep (0.3 sec ON / 5 sec OFF): Indicates low battery when the battery level is below 20%. The low battery alarm will not sound during a flood event (unless the flood alarm is muted via the LED button) or when Economic mode is selected.

• LED Button Indication:

  • Blue light: AP mode is enabled.

  • Red light: STA mode is active, but the device is not connected to a Wi-Fi network.

  • Yellow light: STA mode is active, and the device is connected to a Wi-Fi network but not connected to the Shelly Cloud, or the Shelly Cloud is disabled.

  • Green light: STA mode is active, and the device is connected to both a Wi-Fi network and the Shelly Cloud.

  • Flashing Purple light: device is in Zigbee commissioning mode.

  • Flashing Red/Blue light: OTA update is in progress.

  • Flashing Yellow light: Device is in identification mode, signaling its presence for user identification.

Alarm Modes

• Flood Detection Mode - detects a state change and, if water is present, triggers an immediate alarm to alert you of potential flooding.

• Rain Detection Mode - detects a state change when water is present but does not trigger an alarm, ideal for non-critical scenarios like rain detection.

*Continue reporting until successful, then sleep. Report again upon flood state change. If multiple reporting channels are configured, success on any channel will be considered a successful report.

**Buzzer pattern: 3.5 sec ON / 1.5 sec OFF

What are the differences between the different generations of Shelly products?

Each new generation adds more power, memory, and features:

Gen 1 offers basic control;

Gen 2 (Plus Series, Mini Series, Pro Series) adds Bluetooth, scripting, and better security;

Gen 3 improves performance, adds Matter (starting from firmware version 1.6.0 or newer) and advanced monitoring;

Gen 4 offers multi-protocol connectivity, featuring Wi-Fi 6, Bluetooth, Zigbee, and Matter.

Can I control the device via Bluetooth?

No, the protocol is used only for device inclusion, allowing for quick and easy setup through the Shelly Smart Control app.

For bluetooth control it is required to have another Bluetooth device such as Shelly BLU Button or Shelly BLU Motion to interact.

Additionally, Shelly devices can function as a BLE gateway, bridging Shelly BLU devices to your Wi-Fi network.

Is it possible to use the device without a hub?

Yes, Shelly devices (except for Wave devices) operate independently without the need for a hub. They connect directly to your Wi-Fi network, and you can control them via the Shelly Smart Control app, web interface, or through integrations with platforms like Google Home, Alexa, Home Assistant and Samsung SmartThings.