SonOff
SONOFF SNZB-05P Zigbee Water Leak Detector | IP67 | 0.5mm Alert | Alexa
Description
An undetected water leak can cause thousands of euros in damage. The SNZB-05P alerts you in seconds, even if your internet connection is down. Ultra-sensitive Zigbee 3.0 water leak sensor, IP67 certified, with infinitely extendable detection cable. Ideal under the sink, near the washing machine, in the basement, bathroom, or around the water heater.
Key Features
💧 Ultra-sensitive detection from 0.5mm of liquid Raised gold probes detect water levels as low as 0.5 mm. The concave design in the center of the sensor even collects drops to stop a leak at the source before it worsens. Usable without false alarms on metal surfaces thanks to insulated probes.
🔌 Extension cable included (2m) - infinitely extendable The included 2-meter wired detection cable allows monitoring of a much larger area than the sensor alone. Ideal for wrapping around a washing machine, monitoring the entire length of a countertop, or covering an entire basement. Cables connect in series via magnetic USB-C connector, with no limit on total length.
🔔 Multiple alerts - even without WiFi As soon as a leak is detected, multiple alert channels are triggered simultaneously: push notification on smartphone, audible siren via the Zigbee gateway (works locally even without internet), email and SMS alerts via IFTTT (advanced eWeLink subscription required). An alert is resent every 10 minutes as long as the leak persists.
🛡️ IP67 certified - submersible up to 1 meter The casing is IP67 certified: dust and splash resistant. Can be submerged up to 1 meter for 30 minutes. Perfectly suited for humid environments such as bathrooms, laundry rooms, or basements.
⚡ Local scenes without cloud dependency Thanks to the Zigbee protocol, automations work locally: if a leak is detected, a connected water valve can close automatically, a siren can sound, or another device can be shut off - all without internet.
🔋 5 years of battery life without replacement Powered by a high-capacity CR2477 battery, the SNZB-05P offers over 5 years of autonomy under normal use conditions. Install it and forget it.
🧲 Tool-free installation - adhesive or clips provided Compact and discreet, the sensor attaches in seconds with double-sided adhesive or included cable clips. Compatible with most surfaces, including metals (without false alarms).
Recommended Use Cases Under the kitchen sink · Under the washing machine or dryer · Around the water heater or boiler · In the basement or cellar · Bathroom and shower · Terrarium or aquatic tank · Technical room · Greenhouse
Technical Specifications
| Protocol | Zigbee 3.0 |
| Hub required | Yes - see compatibility table below |
| Protection rating | IP67 (1m immersion / 30 min) |
| Detection threshold | From 0.5 mm of liquid |
| Probes | Gold - anti-corrosion |
| Extension cable | 2 m included - infinitely extendable in series |
| Cable connection | Magnetic USB-C |
| Battery | CR2477 3V (included) - life ~5 years |
| Alerts | Push app + gateway siren + email/SMS (subscription) |
| Alert frequency | Every 10 min during an active leak |
| Application | eWeLink (iOS & Android) |
| Dimensions | Compact - adhesive or clip fixation |
| Usage | Indoor - humid surfaces accepted |
Box Contents
- 1 x SNZB-05P Leak Detector
- 1 x 2m Extended Detection Cable
- 1 x CR2477 Battery (included)
- 1 x Cable fixing clips
- 1 x Multilingual User Manual
⚠️ A Zigbee hub is mandatory to receive smartphone alerts and activate automations. Without a hub, the sensor cannot notify you. The extension cable may trigger in case of very high ambient humidity - ensure complete drying before reuse.
Compatibility Table
| Protocol | Compatible? | Note |
|---|---|---|
| ⚡ Zigbee | ✅ Native | Main protocol - Zigbee 3.0 |
| 📶 WiFi / Tuya | ❌ Not compatible | Zigbee product only |
| 🌐 Matter | ⚠️ Via Matter bridge | Via iHost or ZBBridge-U with Matter bridge - not guaranteed depending on firmware version |
| 🔷 Bluetooth | ❌ Not compatible | |
| 🔵 Z-Wave | ❌ Not compatible |
| Ecosystem | Compatible? | Conditions |
|---|---|---|
| 🏠 Home Assistant | ✅ Compatible | Via ZHA or Zigbee2MQTT + Zigbee dongle (SONOFF ZBDongle-E/P recommended) |
| 🎙️ Amazon Alexa | ✅ Compatible | Via compatible SONOFF Zigbee hub (ZBBridge-P, NSPanel Pro, Echo 4th gen...) |
| 📱 Google Home | ✅ Compatible | Via SONOFF hub with eWeLink integration |
| 🍎 Apple HomeKit | ⚠️ Via Matter bridge | Via iHost or ZBBridge-U with Matter bridge activated - compatibility not guaranteed depending on firmware |
| 🏘️ Jeedom | ✅ Compatible | Via Zigbee plugin (Zigbee2MQTT or ZHA) + Zigbee dongle |
| 💡 Enki (Leroy Merlin) | ❌ Not compatible | Enki ecosystem not compatible with standard Zigbee |
| 🔵 Tuya / Smart Life | ❌ Not compatible | SONOFF eWeLink product only - no native Tuya support |
| 🪑 IKEA Home smart | ⚠️ Partial | Possible via Dirigera with standard Zigbee support - not guaranteed |
| 🏠 Somfy TaHoma | ⚠️ Partial | Very limited functionality via TaHoma Switch - wet/dry state only |
| 📱 Xiaomi Mi Home | ❌ Not compatible | Xiaomi proprietary ecosystem |
| 🏡 Aqara Home | ❌ Not compatible | Aqara proprietary ecosystem |
| 🛒 Lidl Home | ❌ Not compatible | Lidl/Tuya proprietary ecosystem |
💡 Our recommendation: pair the SNZB-05P with a connected Zigbee water valve to create comprehensive automatic protection. If a leak is detected, the valve closes without human intervention - ideal if you are away or on vacation. We recommend the SONOFF ZBDongle-E with Home Assistant for advanced integration, or the SONOFF NSPanel Pro for a simple solution via the eWeLink app.
Shipping & Returns
We strive to process and ship all orders as quickly as possible. The average processing and delivery time is approximately 7 business days. We work diligently to get your items to you as soon as possible.
We are committed to providing you with a positive shopping experience. If you wish to return an item for any reason, please contact our team. We will review each return request with care and understanding.
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