Product Overview
Introduction
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Product Name |
Zigbee Water Leak Sensor |
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Product Model |
Zigbee Water Leak Sensor is a low-power Zigbee 3.0 protocol-based water leak sensor that detects real-time water leakage in the environment. It allows for work with other devices through scene linkage settings. For instance, placing the sensor in areas like the basement, kitchen, or attic, it will trigger a Gateway sound alarm and send an App notification when water leakage is detected.
Highlights
- Leak & Drip Detection
The elevated probe design detects liquid levels as low as 0.5mm and works reliably on metal surfaces without false triggers. Its concave water collection design quickly senses drips and stops leaks at the source. - Extended Detection Capability
Supports connection with water leak detection cables (sold separately or as part of sensor kits). Whether covering a wide area or a narrow spot, water leaks are detected accurately. Extension cables can be connected in series without length limitation. - Real-time Alerts & Multiple Notifications
Instant app push notifications alert you immediately upon water detection. Zigbee local scenes can trigger gateway alarms even during WiFi outages. - Zigbee 3.0 Compatible
Compatible with Zigbee 3.0 hubs such as SONOFF NSPanel Pro, SONOFF iHost, ZB Bridge variants (ZB Bridge, ZB Bridge-P, ZB Bridge-U), and SmartThings Hub V3. - Home Assistant Support
Easily integrates with Home Assistant via ZHA or Zigbee2MQTT (requires Zigbee dongle like SONOFF ZBDongle-P or ZBDongle-E) for seamless home automation.
Applications
- Bathtub overflow detection
- Water heater leak detection
- Basement leakage detection, etc.
Specification
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Model |
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MCU |
EFR32MG22 |
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Input |
3V⎓ |
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Battery model |
CR2477 |
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Color |
White |
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IP rating |
IP67 |
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Usage |
Placed on the ground (with optional external extension cord). |
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Communication distance |
130m (Open space) |
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Battery life |
5 years (Trigger frequency: 50 times/day) |
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Product dimension |
48x48x21.6mm |
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Net weight |
34.3g (Battery not included) |
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Casing materials |
PC+ABS |
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Wireless connection |
Zigbee 3.0 |
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Pairing time |
180s |
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Applicable place |
Indoor |
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Working temperature |
-10°C ~ 60°C |
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Working humidity |
0-100%RH |
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Working height |
Less than 5000m |
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Certification |
CE/FCC/ISED/RoHS |
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Executive standard |
EN 62368-1 |
Key Features
eWeLink Platform
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Notice: This functionality is available only when the device is paired with the eWeLink app. For capabilities when the device is paired via Matter with Alexa, Google Home, or other platforms, refer to Key Features >> Compatible Zigbee Hubs List |
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Device Home Page Functions |
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Key Features |
Feature Description |
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Device status |
Check for water leaks. |
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Battery level |
The current battery level of the device. |
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History Record |
Records of device status changes. |
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Device Settings |
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Key Features |
Feature Description |
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Third-party Platforms |
Alexa |
Water leak sensor status query |
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Google Home |
Zigbee door sensor status query |
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SmartThings |
Zigbee door sensor status query |
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Alice |
Zigbee door sensor status query |
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IFTTT |
Zigbee door sensor status query |
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Assign location |
Set up the home and room where the device is located. |
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Share |
The device can be shared with other eweLink accounts. |
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Smart Scene |
Trigger Condition |
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Execution Action |
Unsupport being the smart scene execution device. |
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Delete Device |
Remove the device from the eWeLink platform. |
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Compatible Zigbee Hubs List
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Platform |
eWeLink |
Home Assistant via ZHA |
Home Assistant via Z2M |
SmartThings |
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Zigbee Hub |
ZBBridge |
ZBBridge-P ZBBridge-U, NSPanel Pro, iHost |
ZBDongle-P/-E |
ZBDongle-P/-E |
Samsung SmartThings Hub V3 / Aeotec V3 |
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Water leak detected |
√ |
√ |
√ |
√ |
√ |
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History Record |
√ |
√ |
√ |
√ |
√ |
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Local Scene |
× |
√ |
√ |
√ |
√ |
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OTA |
× |
√ |
√ |
√ |
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Notice:
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Installation and Configuration Guide
① LED indicator
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LED indicator status |
Description |
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Flash slowly for 180 seconds |
First-time power on/press and hold button for 5s to enter pairing mode. |
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Keep on for 3s and then keep off |
Paired successfully. |
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Exit flashing slowly and keep off |
Distribution failure/timeout. |
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Flash once quickly |
Not added to the gateway, and short-press the button. |
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Flash twice quickly |
Added to the gateway and online, and short-press the button. |
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Flash slowly for 30 seconds |
Abnormal communication. |
② Probe Foot
③ Bottom Cover
④ Battery Cover
⑤ Button
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Button |
Description |
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Press & hold 5 seconds |
Device enters the pairing mode. |
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Single press |
Effective communication distance verification. |
Power On the Device
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Rotate and remove the bottom cover. |
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Add Device
eWeLink Platform
Download the eWeLink App & Add SONOFF Zigbee Gateway.
Open eWeLink to scan the QR code on the Quick Guide or the device itself to add the device.
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Long press the button for 5 seconds. |
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Select Zigbee gateway. |
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Wait until the addition is done. |
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Compatible Third-party Platform
If you're using a third-party Zigbee gateway, please refer to the corresponding app for detailed instructions on how to add the device.
Installation
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Plan B: One device paired with multiple water leak detection cables. |
Effective Communication Distance Verification
Install the device in the desired place, then press the Pairing button on the device. The LED indicator flashes twice means the device and the device under the same Zigbee network (the router device or hub) are in the effective communication distance.
FAQ
- When the sensor is used with a water immersion cable, how long can the water immersion cables be connected in series?
There is no limit on the length. - Can the water immersion cable be reused?
After the water immersion cable is soaked, it can be reused after being completely dried. - What is the recommended humidity environment for the water immersion cable?
The recommended humidity environment for the A4 water immersion cable is 0~80%RH (without condensation). A very high humidity environment may cause it to be mistaken for the presence of water. - Can a common Type-C extension cable be used to extend between two water-immersion cables?
Yes, but please note that do not use a soaked Type-C extension cable to charge mobile devices.
Troubleshooting
- The Zigbee signal is unstable and the device frequently goes offline?
If your device often goes offline, it could be due to the long distance between the device and the gateway, or obstacles/interference blocking the signal. Try adjusting the placement of your device and gateway, or use additional Zigbee router devices to strengthen your Zigbee network coverage. - Missing features after pairing with the eWeLink app?
Please ensure both your Zigbee gateway and the eWeLink app are updated to the latest version. If the device was added using an outdated gateway firmware, remove the device, update the Zigbee gateway, and then re-add the device.
Application Explore
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SNZB-05P 1:1 Scale Replica Model |
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This is a 1:1 scale replica model of the SONOFF SNZB-05P water leak sensor. The model fully reproduces the actual size and outer contours of the sensor, allowing you to precisely measure whether the device fits your intended installation location.
You can 3D print the model to test clearances or spatial compatibility before purchasing the real device. It is especially useful for verifying placements under appliances, in cabinets, or near piping where space may be tight. |
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Access Link: SNZB-05P 1:1 Scale Replica Model |
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Know more
For a detailed guide and review of the SONOFF SNZB-05P, visit our free course at the SONOFF Academy.