SONOFF Zigbee Water Leak Sensor | SNZB-05P

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【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.

SNZB-05P Standard: Water Leak Sensor
Free Standard Shipping Over $89
30 Days No Reason Returns
2-Year Hassle-Free Warranty

SONOFF Zigbee Water Leak Sensor | SNZB-05P

Early Detection, Maximum Protection

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SNZB-05P
Responsive Layout

Various Unexpected Leaks May Cause the House to Be Flooded

SNZB-05P

SONOFF Zigbee Water Leak Sensor SNZB-05P Is Coming!!!

Multiple Detection Methods for Various Scenarios

Leaking Detection

The elevated probe design can detect a 0.5mm liquid level and allows for use on metal surfaces without false triggers from the metal.

Dripping Detection

Concave water collection design detects drips and stops leaks at the source.

Extension Cable Detection

Wide-range detection or narrow-area inspection, leaving no water leaks undetected.

Leaking Detection

The elevated probe design can detect a 0.5mm liquid level and allows for use on metal surfaces without false triggers from the metal.

Dripping Detection

Concave water collection design detects drips and stops leaks at the source.

Extension Cable Detection

Wide-range detection or narrow-area inspection, leaving no water leaks undetected.

Striving for Details, Creating Exceptional Quality

Striving for Details, Creating Exceptional Quality

Equipped With Gold-Plated Probes for Enhanced Corrosion Resistance

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SNZB-05P

Made From UV-Resistant
Materials to Prevent
Discoloration Over Time

Extended Battery Life

Using CR2477 battery extends the battery life to over 5 years,
eliminating concerns about frequent battery replacements.

Multiple Notifications

App Push Notification

Scene trigger Zigbee hub sound alarm

Scene trigger Zigbee hub sound alarm

*Need to subscribe to eWeLink Advanced plan.

Redundant Alarm Settings to Prevent Missed Alerts

Redundant Alarm Settings to Prevent Missed Alerts

Local Scenes Make Your
Alarms More Stable and
Reliable

Local Scenes Make Your Alarms More Stable and Reliable

Redundant Alarm Settings to Prevent Missed Alerts Supported Third-party Platforms

Supported Third-party Platforms

Supported Zigbee Hubs

Supported Third-party Platforms

Supported Third-party Platforms

Feature Overview

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SNZB-05P

What’s in the Box

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SNZB-05P

Specs & User Manual

SONOFF SNZB-05P is a Zigbee 3.0 water leak sensor featuring an elevated probe that detects liquid levels as low as 0.5 mm and a concave collection design for fast drip sensing. It supports extended detection cable networks with no length limit and delivers instant app alerts alongside local Zigbee scene-triggered alarms—even if Wi-Fi is down. Compatible with SONOFF NSPanel Pro, iHost, ZB Bridge series, and Home Assistant (via ZHA or Zigbee2MQTT), it provides reliable, scalable water leak protection.

User Manual (PDF)
Model

SNZB-05P

Battery model

CR2477

Casing materials

PC+ABS

Wireless connection

Zigbee 3.0

Working temperature

-10℃~60℃

FAQ

Customer Reviews

Based on 19 reviews
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(16)
16%
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Brendan W
Great Device, Pairs perfectly with Third Party hub

Really impressed with this device for the price point. I've tried a few different leak sensors and these are just so simple to use, and the materials used are higher quality than the price would indicate. The plastics are almost "premium" quality. Very nicely manufactured and the surface finish is fantastic. The seal around the battery compartment is excellent quality silicon seal. It would keep the IP Rating for the long term. Pairing to Home Assistant using a SkyConnect dongle (SiLabs chipset) is perfect and worked first time with no issues. Detection speed is instant. The extension cables allowing multiple cables to be connected in line adds to the versatility by allowing multiple detection points on one sensor. Only one thing to note that is not 100% clear in the advertising. You need a minimum of two cables to get an extension point as the first one has to connect to the detector itself (means the detector no longer can detect water leaks with contacts facing down, but it could still detect drips. You need the second extension cable to act as that first detection point, as the extension cable is the two contacts, a hardwired interconnect cable and a connection socket on the probe point. That first cable connects to the detector, second cable will contain your first remote probe, from then on you can adda few if needed. I do have one sensor with 2 extension points (3 cables) to monitor a larger area with one sensor. It works out a little cheaper, and obviously uses one battery, but not a lot cheaper over using two actual leak sensors.

G
Giuseppe Guttuso
It's nice

It seems good but I hope I never have to see if it really works or not :)

m
marios christofi
Works as expected but not compatible with matter bridge

great product well made enclosure is safe tested and it works fine with the ewelink app. BUT it does not work with the Sonnoff Matter bridge "yet". hopefully it will be compatible with the sonnoff bridge soon.

I
Iolanda Tirella
utilissimo

sensore molto utile e indispensabile per chi sempre fuori casa non vuole ritrovarsi sorprese al rientro. Combinato con una valvola idrico smart la morte sua.

L
Luca Cazzuoli
Sensore indispensabile

Uno dei sensori pi utili per luso casalingo, in accoppiamento con la valvola di blocco idrico evita brutte sorprese quando assenti da casa.
Non so 5 stelle perch trovo che andrebbe potenziato la radio del protocollo zigbee.
Il sensore fisiologicamente si posiziona in zone anguste che non sempre vengono raggiunte dalla copertura dellHub zigbee in una casa tipo, se non dedicato.