Shelly Flood S Gen4

The Shelly Flood S Gen4 is a low-profile, battery-powered water leak sensor for places where leaks can be hard to spot. Place it flat beneath a washing machine or dishwasher, near a water heater, or under a sink to detect water and trigger alerts or compatible smart-home actions.

Features

• Large stainless-steel sensing pads detect water, including low-conductivity water.
• Flood and rain detection modes, with a built-in buzzer and three selectable alarm profiles.
• IP67-rated housing for splash- and spill-prone areas.
• Connects using Wi-Fi 6, Zigbee 3.0 or Bluetooth 5 LE, with Matter over Wi-Fi support.
• Works with the Shelly Smart Control app and compatible home automation platforms, including Home Assistant. Zigbee requires a compatible hub.

Specifications

• Manufacturer model: S4SN-0071Z
• Dimensions: 23 mm high × 77 mm diameter
• Power: 1 × CR123A battery, included
• Estimated battery life: approximately 2 years, depending on usage and connection
• Operating temperature: −20°C to 40°C
• Water resistance: IP67

The sensor checks for changes in water status approximately every five seconds. Smart notifications and automations depend on your network and compatible system configuration.