Shelly Flood S Gen4
Shelly Flood S Gen4
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Description ▼
The Shelly Flood S Gen4 (S4SN-0071Z) is a compact, low-profile, battery-powered water leak sensor. Large stainless-steel sensing pads detect water quickly, even clean or low-conductivity water, so it fits under washers, dishwashers, refrigerators, sinks, and water heaters. It connects over Wi-Fi 6, Bluetooth 5 LE, and Zigbee 3.0, supports Matter-over-Wi-Fi, and sounds a built-in buzzer on the spot.
KEY FEATURES
- Large-surface stainless-steel pads for fast, reliable detection, including clean or low-conductivity water
- Flood Detection and Rain Detection modes
- Three alarm profiles: Intense, Normal, and Economic
- Built-in buzzer for local audible alerts, plus remote notifications
- IP67 protection
- Low-profile design for placement under appliances and near plumbing
- CR123A battery included, up to approx. 2 years of battery life
- Wi-Fi 6 (802.11 b/g/n/ax), Bluetooth 5 LE, Zigbee 3.0, Matter-over-Wi-Fi
- Local automation actions; Shelly Cloud, Home Assistant, and other platforms
- MQTT, UDP, webhooks, and KVS
SPECIFICATIONS
| Category | Details |
|---|---|
| Model | Shelly Flood S Gen4 (S4SN-0071Z) SSID: ShellyFloodSG4-XXXXXXXXXXXX BLE Model ID: 0x1826 |
| Size (HxD) | 23 × 77 mm / 0.91 × 3.03 in |
| Weight | 50 g / 1.76 oz (without battery) 70 g / 2.47 oz (with battery) |
| Mounting | Flat surface |
| Shell | Plastic Color: White |
| Environment | -20 °C to 40 °C / -5 °F to 105 °F 30% to 100% RH Max altitude 2000 m / 6562 ft |
| Ingress protection | IP67 |
| Power | 1 × CR123A battery (included) Estimated battery life approx. 2 years (depends on battery, usage, and connection strength) |
| Sensors | Water detection |
| Wi-Fi | 802.11 b/g/n/ax 2401-2483 MHz, < 20 dBm Up to ~30 m / 100 ft indoors, ~50 m / 160 ft outdoors (local conditions apply) |
| Bluetooth | 5 (LE) 2402-2480 MHz, < 20 dBm Up to ~10 m / 33 ft indoors, ~30 m / 100 ft outdoors (local conditions apply) |
| Zigbee | 802.15.4 2405-2480 MHz, < 20 dBm Up to ~100 m / 328 ft indoors, ~300 m / 984 ft outdoors (local conditions apply) |
| MCU | ESP-Shelly-C68F, 8 MB flash |
| Firmware | 10 webhooks (2 URLs each); MQTT; UDP; KVS; no schedules or scripting |
What's Included:
- 1 × Shelly Flood S Gen4
- 1 × CR123A battery
- Printed user and safety guide
NOTES
- To save battery, the sensor checks the flood state every 5 seconds, so an alert can take up to about 5 seconds after water reaches the pads.
- In humid spaces you can raise the State hold time (0 to 60 s) to prevent false alarms.
- Rain Detection mode reports a state change without the flood alarm, useful outdoors for pausing irrigation or closing awnings and skylights.
- Button shortcuts (per Shelly docs): 1× wake and report; 2× sleep; 3× Zigbee inclusion; 5× switch Matter firmware / Zigbee; hold 5 s network reset; hold 10 s factory reset.
Bundle Deals▼
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SKU:E1114
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