Shelly Flood Gen4 Smart Water Leak Sensor with Wi-Fi, Zigbee & Matter
Protect your home or business from costly water damage with the Shelly Flood Gen4, an advanced smart water leak detector featuring multi-protocol connectivity (Wi-Fi, Bluetooth, Zigbee, and Matter). This battery-powered sensor comes with an innovative 2-meter extendable leak sensor cable that detects water along its entire length, covering larger areas and identifying leaks beyond a single point. Perfect for Australian homes, holiday properties, rental investments, and commercial spaces where water damage prevention is critical.
Why You'll Love the Shelly Flood Gen4
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Extended Coverage: 2m leak sensor cable included, expandable up to 150 meters by connecting additional cables for whole-building protection
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Instant Alerts: Receive real-time notifications on your smartphone the moment water is detected, plus built-in local buzzer alarm
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Dual Detection Modes: Switch between Flood Detection and Rain Detection modes for indoor or semi-sheltered outdoor monitoring
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Universal Smart Home Integration: Matter-certified with Wi-Fi, Zigbee, and Bluetooth connectivity - works with Apple HomeKit, Google Home, Amazon Alexa, Home Assistant, and Samsung SmartThings
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Customisable Alarm Profiles: Choose from three built-in alarm styles (Intense, Normal, or Economic) to match your space and preferences
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Battery Powered: Up to 24 months battery life with 4x AA batteries (included) - no wiring required for flexible placement anywhere
Intelligent Water Leak Detection for Every Space
The Shelly Flood Gen4 is engineered to catch leaks early before they turn into expensive disasters. Place it under sinks, behind washing machines, near hot water systems, in basements, bathrooms, laundry rooms, or under fridges and freezers. The extendable sensor cable lets you monitor hard-to-reach areas and multiple leak-prone zones with a single device. With IP44 environmental protection, it's built tough for everyday splash-prone environments.
Smart Automation & Local Control
Create powerful automations by integrating the Shelly Flood Gen4 with other smart devices. Automatically shut off your home's main water supply via a smart valve when a leak is detected, turn off appliances like washing machines or dishwashers, or trigger alerts across your entire smart home ecosystem. The device supports local automation actions for independent operation even without an internet connection, ensuring protection 24/7.
Multi-Protocol Connectivity for Maximum Flexibility
With support for Wi-Fi 6 (IEEE 802.11ax), Bluetooth 5 LE, Zigbee 3.0, and Matter-over-Wi-Fi, the Shelly Flood Gen4 integrates seamlessly into any modern smart home setup. Control and monitor from the free Shelly Smart Control app (iOS and Android), or access the built-in web interface for direct device management and settings adjustments. Matter certification ensures future-proof compatibility across all major ecosystems.
Perfect for Australian Homes & Properties
Whether you're protecting a family home, managing a rental property portfolio, safeguarding a holiday house, or securing a commercial space, the Shelly Flood Gen4 delivers dependable, flexible leak protection. Monitor properties remotely from anywhere in Australia, receive instant alerts on your mobile device, and take action before minor leaks become major insurance claims. Ideal for property managers, Airbnb hosts, homeowners, and building managers across Australia.
What's in the Box
- Shelly Flood Gen4 water leak sensor device
- 2-meter leak sensor cable
- 4x AA 1.5V batteries
- User guide and safety documentation
Full Specifications
| Model |
Shelly Flood Gen4 (S4SN-0071A) |
| Dimensions (H×W×D) |
97 × 76 × 25 mm (3.82 × 2.99 × 0.98 in) |
| Weight |
91 g (without batteries), 185 g (with batteries) |
| Shell Material |
Plastic |
| Protection Rating |
IP44 (splash-resistant) |
| Power Supply |
Battery powered |
| Battery Type |
4 × AA 1.5V (included) |
| Battery Life |
Up to 24 months (depending on usage and connectivity) |
| Leak Sensor Cable |
2 meters (included), extendable up to 150 meters with additional cables |
| Detection Modes |
Flood Detection, Rain Detection |
| Alarm Profiles |
Intense, Normal, Economic (customisable) |
| Built-in Alarm |
Buzzer with local audio alerts |
| Detection Frequency |
Every 5 seconds (for battery efficiency) |
| Wi-Fi Protocol |
IEEE 802.11 b/g/n/ax (Wi-Fi 6) |
| Wi-Fi Frequency |
2401-2483 MHz |
| Wi-Fi Range |
Up to 30 m indoors, 50 m outdoors (depending on conditions) |
| Bluetooth |
Bluetooth 5 LE |
| Bluetooth Frequency |
2402-2480 MHz |
| Bluetooth Range |
Up to 10 m indoors, 30 m outdoors |
| Zigbee Protocol |
IEEE 802.15.4 (Zigbee 3.0) |
| Zigbee Frequency |
2405-2480 MHz |
| Zigbee Range |
Up to 100 m indoors, 300 m outdoors |
| Matter Support |
Yes (Matter-over-Wi-Fi certified) |
| Smart Home Compatibility |
Apple HomeKit, Google Home, Amazon Alexa, Samsung SmartThings, Home Assistant, Shelly Cloud |
| Local Automation |
Yes (works without internet connection) |
| Mobile App |
Shelly Smart Control (iOS & Android) |
| Web Interface |
Built-in for direct device control |
| Max. Altitude |
2000 m (6562 ft) |
| Warranty |
3 years (excludes consumable batteries) |
Specifications are sourced from the manufacturer product page and may be updated. The Shelly Flood Gen4 is designed and manufactured by Shelly Group (Allterco Robotics). Matter, Wi-Fi, Bluetooth, and Zigbee are registered trademarks of their respective owners.
