Shelly Flood S Gen4 - Wifi, Matter, Zigbee and Bluetooth Flood detector

Shelly Flood S Gen4 – Smart Flood and Rain Sensor

The Shelly Flood S Gen4 is a smart flood sensor designed to detect water leaks quickly and accurately using a large-surface-area triple stainless steel electrode. It provides instant local and remote alerts, helping prevent costly water damage before it becomes a major issue.

Its compact and ultra-slim design allows installation in tight spaces such as under washing machines, dishwashers, refrigerators, or other appliances. The sensor can detect even small amounts of water, including clean or low-conductivity water such as air-conditioning condensation or distilled water.

With support for Wi-Fi, Zigbee, Bluetooth, and Matter, the Shelly Flood S Gen4 integrates seamlessly with Shelly Smart Control and third-party home automation systems. It can also trigger automatic actions such as shutting off the water supply when connected to a compatible smart water valve.

Main Features

• Triple stainless steel electrode with large sensing surface.
• Fast detection of water leaks and moisture.
• Two operating modes: Flood Detection and Rain Detection.
• Instant remote notifications.
• Built-in buzzer for local audible alerts.
• Local automations without cloud dependency.
• Compatible with Shelly Smart Control.
• Compatible with third-party home automation systems.
• Automatic water shut-off when paired with a compatible smart water valve.
• Smart rain automations for windows, skylights, blinds, and irrigation systems.
• Detection of clean and low-conductivity water.

Technical Specifications

• Product: Shelly Flood S Gen4
• Connectivity: Wi-Fi, Zigbee, Bluetooth
• Matter Certified
• Sensor Type: Triple stainless steel electrode
• Detection Modes: Flood Detection and Rain Detection
• Protection Rating: IP67
• Power Supply: Battery powered
• Battery Life: Up to 2 years
• Built-in Alarm Types: High, Normal, and Economy
• Ultra-compact design
• Built-in buzzer for local alerts

Smart Protection Features

• Detects leaks under washing machines, dishwashers, refrigerators, and other appliances.
• Provides immediate local and remote alerts when water is detected.
• Maintains local protection even when cloud services are unavailable.
• Supports automatic shut-off of the main water supply through compatible smart valves.

Rain Detection Automations

• Detects rainfall when installed outdoors.
• Automatically stops irrigation systems.
• Can trigger closing of skylights and windows.
• Can adjust blinds and other smart devices based on weather conditions.