Shelly Flood Gen4 – Smart Water Leak & Rain Detection Sensor
Shelly Flood Gen4 is a battery-powered smart water leak and rain detection sensor designed to detect leaks immediately and send alerts to your smart home system or mobile device, helping prevent costly water damage.
The device includes a 2 m leak detection cable (extendable up to 150 m) and supports multi-protocol connectivity via Wi-Fi, Bluetooth, and Zigbee, with Matter certification for broad smart home compatibility including Home Assistant, Apple Home, and Google Home.
Key Features
Use Cases
What’s Included
Technical Specifications
Physical
Weight (Without Batteries): 91 g
Weight (With Batteries): 185 g
Mounting: Wall
Shell Material: Plastic
Colour: White
Environmental
Humidity: 30–70% RH
Maximum Altitude: 2000 m
Electrical
Battery Type: 4 × AA 1.5 V (included)
Estimated Battery Life: Approx. 2 years (usage dependent)
Sensors
Maximum Extension Length: Up to 150 m
Connection Type: Dedicated leak sensor port
Connectivity – Wi-Fi
RF Band: 2401–2483 MHz
Max RF Power: < 20 dBm
Range: Up to 30 m indoors, up to 50 m outdoors
Connectivity – Bluetooth
RF Band: 2402–2480 MHz
Max RF Power: < 20 dBm
Range: Up to 10 m indoors, up to 30 m outdoors
Connectivity – Zigbee
RF Band: 2405–2480 MHz
Max RF Power: < 20 dBm
Range: Up to 100 m indoors, up to 300 m outdoors
Microcontroller
Flash Memory: 8 MB
Firmware Capabilities
Webhooks: 10 hooks (2 URLs per hook)
Scripting: No
MQTT: Yes
UDP: Yes
KVS: Yes