Shelly Flood Gen4

What is Shelly Flood Gen4?

Stay one step ahead of water damage.

Smart flood sensor with a leak sensor cable, ready to catch unexpected issues before they escalate. Delivers real-time alerts and fits perfectly into your smart home system. Ideal for basements, kitchens, garages, laundry rooms, holiday homes or any area at risk.

New: Multiprotocol connectivity: Choose from Bluetooth, Wi-Fi or Zigbee.
Matter-certified: Integrates into any Matter ecosystem
Leak detection: 2m extendable leak sensor cable for coverage in small and large areas.
Supports two modes: Flood Detection and Rain Detection
Three built-in flood alarm modes: Intense, Normal, and Economic
Battery-powered: For flexibility and uninterrupted operation, included in the pack
Protection class IP44: Built tough with IP44 environmental resistance design
Smart automation: Supports local automation actions for independent operation
Control from anywhere: Use the Shelly Smart Control App or your favorite automation platform
Works with all major systems: Apple HomeKit, Google Home, Home Assistant.

VIEW SPECIFICATIONS SHELLY MOBILE APP

Designed for your home's safety

Shelly Flood Gen4 detects leaks the moment they happen – so you can stop water damage before it gets bigger. Instant alerts directly to your mobile device, zero hassle. With its precise leak sensor cable and smart home compatibility, it offers an easy way to protect your property. Whether you’re a smart home user, a holiday homeowner, or managing multiple properties, this device lets you monitor and control leaks from anywhere.

Features

Flood & Rain Detection

Detects leaks, spills, or rainwater intrusion with instant alerts to your phone or home automation system

Multiprotocol connectivity

Highly compatible! Choose the best protocol for your smart home – Wi-Fi, Bluetooth or Zigbee

Extended Leak Sensor Cable

Monitor hard-to-reach places for broader coverage

Battery-powered

Customizable Alert Modes

Choose from three smart alarm styles: Intense, Normal, and Economic

Smart Scenes & Automation

Set automation scenarios, like turning off appliances, by combining Shelly Flood Gen4 with your other Shelly or third-party devices

Use Cases

Complete Leak Protection-At Home or Away

Perfect for: Under sinks, dishwashers, or washing machines

Place Shelly Flood Gen4 beneath appliances that commonly develop leaks like your dishwasher or washing machine. Its extendable leak sensor cable allows you to cover a larger area, detecting water the moment it appears. Receive real-time alerts on your phone and activate local alarms to prevent long-term damage before it starts.

Want even more peace of mind? Pair it with Shelly 1 Gen4 or the Frankever Smart Water Valve to automatically shut off your home’s water supply when you’re away. With local automation and scripting, the system protects your home 24/7-even without internet.

Peace of Mind for Your Vacation Property

Perfect for: Vacation homes, cabins, and remote properties

Don’t let a minor leak ruin your next getaway. Shelly Flood Gen4 is battery-operated and offers uninterrupted monitor & control via Shelly Smart Control app or other home automation platforms.

Install it in seasonal homes or cabins and activate “Economic Alarm Style” to minimize battery drain while keeping your space protected-even when left unattended for months.

Secure Your Basement or Garage from Flood Damage

Perfect for: Basements or garages

Basements or garages are among the most vulnerable parts of any home. Install Shelly Flood Gen4 in corners or along pipes where flooding might occur. Thanks to its customizable alert modes and extended coverage, you’ll be notified immediately of leaks, even if you’re not home, helping you act fast and avoid costly repairs.

Protect Outdoor Furniture with Automated Rain Detection

Perfect for: Patios, decks, and garden seating areas

Outdoor lounging spaces can be quickly ruined by unexpected rain. Using Rain Mode, Shelly Flood Gen4 detects the early signs of rainfall by sensing rising humidity levels on its surface – a reliable indicator before water visibly accumulates. When paired with Shelly 2PM Gen4 to control your motorized awning, it can automatically extend the cover to shield your furniture the moment rain begins.

💡 Note: Shelly Flood Gen4 can detect rain using its leak sensor cable. The main device is IP44 rated and must not be directly exposed to rainfall. Place the device in a semi-sheltered location (e.g., under an awning, eave, or balcony cover) while positioning the leak sensor cable where it can be exposed to rain for accurate detection.

Gen4 Devices

Experience next-level smart home automation with Shelly Gen4 novelties.
Each Gen4 device offers multi-protocol connectivity, featuring Wi-Fi, Bluetooth, Zigbee, and Matter.
Choose your connection and set up your Shelly device to work with your preferred smart home network in no time.

Wi-Fi

Bluetooth

Zigbee

Matter

Caution

Installation of certain Shelly devices must be done by a qualified electrician or authorised installer.

Specifications

Physical
Size (HxWxD):	97x76x25 mm / 3.82x2.99x0.98 inch
Weight:	91 g / 3.21 oz (without batteries) 185 g / 6.53 oz (with batteries)
Mounting:	Wall
Shell material:	Plastic
Shell color:	White
Environmental
Ambient working temperature:	-20°C to 40°C / -5°F to 105°F
Humidity:	30% to 70% RH
Max. altitude:	2000 m / 6562 ft
Electrical
Power supply:	Batteries
Battery type:	4x AA 1.5 V
Estimated battery life:	approx. 2 years (depending on batteries used, device usage, and network connection strength)
Sensors, meters
Leak sensor cable:	2 m, extendable (up to 150 m), attaches via designated port
Radio
Wi-Fi
Protocol:	802.11 b/g/n/ax
RF band:	2401 - 2483 МHz
Max. RF power:	< 20 dBm
Range:	Up to 30 m / 100 ft indoors and 50 m / 160 ft outdoors (Depends on local conditions)
Bluetooth
Protocol:	5 (LE)
RF band:	2402 - 2480 MHz
Max. RF power:	< 20 dBm
Range:	Up to 10 m / 33 ft indoors and 30 m / 100 ft outdoors (Depends on local conditions)
Zigbee
Protocols:	802.15.4
RF bands:	2405 to 2480 MHz
Max. RF power:	< 20 dBm
Range:	Up to 100 m / 328 ft indoors and 300 meters / 984 ft outdoors (Depends on local conditions)
Microcontroller unit
CPU:	ESP-Shelly-C68F
Flash:	8 MB
Firmware capabilities
Schedules:	No
Webhooks (URL actions):	10 with 2 URLs per hook
Scripting:	No
MQTT:	Yes
UDP:	Yes
KVS (Key-Value Store):	Yes