









💧 Stay dry, stay ahead—leak detection that never sleeps.
The SONOFF SNZB-05P water leak sensor offers ultra-sensitive 0.5mm liquid detection with a unique elevated probe design that avoids false triggers on metal surfaces. It supports unlimited extension cables for customizable coverage and integrates seamlessly with Zigbee 3.0 smart hubs like SONOFF NSPanel Pro and SmartThings. Real-time app alerts and local gateway alarms ensure you’re instantly notified of leaks, even during WiFi outages. Powered by a CR2477 battery, it delivers up to 5 years of maintenance-free operation, making it an essential smart home safeguard for proactive professionals.






| Battery description | Lithium |
| Number of batteries | 1 Lithium Metal batteries required. (included) |
| Voltage | 3 Volts (DC) |
| Control method | App |
| Noise level | 1 Decibels |
| Mounting type | Tabletop Mount |
| Sensor technology | [NI] |
| Manufacturer | SONOFF |
| Part Number | SNZB-05P |
| Product Dimensions | 4.8 x 4.8 x 2.1 cm; 50 g |
| Batteries | 1 Lithium Metal batteries required. (included) |
| Item model number | SNZB-05P |
| Item Package Quantity | 1 |
| Included Components | Quick Guide |
| Batteries included? | Yes |
| Batteries Required? | Yes |
| Battery Cell Type | Lithium Manganese Dioxide |
| Item Weight | 50 g |
W**A
Works perfectly with Samsung Smartthings
You need to google for sonoff samsung smartthings driverIt will lead you to the sonof website.Then you will need to add the driver to the samsung developer site ( SNZB-05P driver )Once added, install the driver, and it's available to the smartthings app on the phone.Tested on smartthings hub v2----
R**M
Water Leak Sensor for HA
Excellent product to use with Home assistant. Easy to setup and forget.
A**E
Good - but battery flat
Works - but the battery was flat and it takes a peculiar type of (CR2477) battery.Somewhat annoying.
G**N
Update: Unit works well however failed after 3 hours due to battery
Need to update as very surprised and pleased when Sonoff gave a refund without my requesting it. Excellent service. Thank you.‐‐----------------------------I bought two units and the configuration and pairing went as expected with Home Assistant. The units themselves are small and compact and appear well constructed. The primary reason for the poor review is the fact one unit failed after 3 hours and on inspection found the battery to be the issue.
Trustpilot
1 month ago
1 month ago