Frient water leak detector
Frient water leak detector
frient Water Leak Detector (FLSZB-110) is a highly reliable flood and temperature sensor based on the Zigbee protocol, designed to protect your home and property from devastating water damage. Manufactured by the Danish smart home brand frient, it stands out from the competition with its integrated, piercingly loud siren (85 dB). This means it alerts you immediately, even if your smart home hub is temporarily offline or your internet connection drops.
It is designed to be placed on the floor under washing machines, dishwashers, or water heaters. It detects even small amounts of liquid and sends immediate alerts to your local smart home server.
Key Features
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Integrated 85 dB siren: Unlike most smart water sensors that only send silent push notifications, the frient detector features a local high-decibel alarm. This ensures that everyone in the house hears the warning immediately, keeping your home protected even during local network outages.
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Built-in temperature sensor: In addition to water detection, it constantly monitors the ambient temperature in the room. You can trigger automations to warn you if the temperature in your basement or cabin drops near freezing, allowing you to take action before pipes actually burst.
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5-year battery life: Designed for extreme efficiency, it runs on a single, easily replaceable CR123A battery. It communicates with your Zigbee coordinator every 5 minutes, while maintaining a battery life of up to 5 years under normal conditions.
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Additional probe support: For high-risk areas with deep water or hard-to-reach places, the sensor can be combined with an additional frient probe extension (sold separately). This allows you to mount the main unit securely on the wall while running the sensor's wired probe directly to the floor.
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Zigbee 3.0 certified: Integrates seamlessly with local, open-source smart home platforms such as Home Assistant (ZHA and Zigbee2MQTT), SmartThings, and Homey, ensuring your data never leaves your local network.
Technical Specifications
| Feature | Specification |
| Model | FLSZB-110 |
| Wireless protocol | Zigbee 3.0 |
| Power supply | 1x CR123A 3V battery (included and replaceable) |
| Estimated battery life | Up to 5 years (reporting every 5 minutes) |
| Audible alarm | Built-in 85 dB siren (measured at a distance of 3 meters) |
| Temperature sensor range | 0 °C to +50 °C |
| Temperature accuracy | ± 1 °C |
| Platform compatibility | Home Assistant, Zigbee2MQTT, SmartThings, Homey, Hubitat |
| Protection rating | IP20 (designed for indoor use; an additional probe is recommended for deep water) |
| Operating temperature | 0 °C to +50 °C (up to 95% humidity without condensation) |
| Dimensions | 60 mm (diameter) × 37 mm (height) |
| Weight | ~61 g (without battery) |
Package Contents
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frient Water Leak Detector (FLSZB-110)
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1x CR123A battery (pre-installed)
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Quick Start Guide