Shelly Flood S Gen4
Description
Shelly Flood S Gen4 is a compact, battery-powered water-leak sensor designed to catch leaks early and help prevent costly damage. Its unique large-surface stainless-steel pads are built for fast, reliable detection, even with clean or low-conductivity water.
Place it where leaks are most likely - under appliances, near plumbing, or in hard-to-reach corners - thanks to its low-profile design. Choose between Flood and Rain modes, and pick one of the three alarm profiles (Intense, Normal, or Economic) to match the space and your preferences, with a built-in buzzer for on-the-spot alerts.
It connects via Wi‑Fi 6, Bluetooth 5 LE, and Zigbee 3.0, and supports Matter-over-Wi‑Fi for modern smart-home setups. It integrates with Shelly Cloud, Home Assistant, and other popular platforms, making it easy to turn a detected leak into an immediate automation or notification.
Main features
- Large-surface stainless-steel pads for fast, reliable water detection, including clean or low-conductivity water
- Flood and Rain operating modes to match different detection scenarios
- Built-in buzzer for local audible alerts
- IP67 protection for demanding environments
- Powered by a CR123A battery (included) with up to 2 years of battery life
- Connectivity via Wi‑Fi 6, Bluetooth 5 LE, and Zigbee 3.0
- Matter-over-Wi‑Fi support for streamlined smart-home connectivity
- Local automation actions for independent operation
- Integrates with Shelly Cloud, Home Assistant, and other popular platforms
Technical Details
Specification
Specifications
| Quantity | Value |
|---|---|
| Physical | |
| Size (HxD): | 23x77 mm / 0.91x3.03 inch |
| Weight: |
|
| Mounting: |
|
| Shell material: | Plastic |
| Shell color: | White |
| Environmental | |
| Ambient working temperature: | -20°C to 40°C / -5°F to 105°F |
| Humidity: | 30% to 100% RH |
| Max. altitude: | 2000 m / 6562 ft |
| Electrical | |
| Power supply: | Battery |
| Battery type: | 1 x CR123A (included) |
| Estimated battery life: | approx. 2 years (depending on batteries used, device usage, and network connection strength) |
| Sensors, meters | |
| Water Detection: | Yes |
| 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 |
| 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 |
| 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 |
| 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 |
