SONOFF SNZB-05P is a ZigBee 3.0 water leak sensor with an elevated probe that detects liquid levels down to 0.5mm and a concave design for quick drop detection. The sensor supports extended cable detection networks with no length restrictions and instantly sends notifications via the app, as well as alarm-triggered local ZigBee alarms, even when there is no Wi-Fi. The sensor is compatible with SONOFF NSPanel Pro, iHost, ZB Bridge series and Home Assistant (via ZHA or Zigbee2MQTT), providing reliable, scalable leak protection.

【Leak and Drip Detection】 Elevated probe design can detect liquids as low as 0.5mm and work reliably on metal surfaces without false alarms. The concave water collection design quickly detects droplets and stops leaks at the source.

【Advanced Detection Capabilities】 Supports connection with water leak detection cables (sold separately or as part of sensor kits). Whether the sensor covers a large or narrow area, water leaks are detected accurately. Extension cables can be connected in series without any length restrictions.

【Real-time Alerts and Multiple Notifications】 The app's instant push notifications immediately notify you when water is detected. Local ZigBee scripts can trigger gateway alarms even when Wi-Fi is down.

【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】Easy integration with Home Assistant via ZHA or Zigbee2MQTT (requires Zigbee adapter such as SONOFF ZBDongle-P or ZBDongle-E) for seamless home automation.

A gateway is required for the device to operate in the ecosystem

Model: SNZB-05P

Battery type: CR2477

Case materials: PC+ABS

Wireless connection: Zigbee 3.0

Operating temperature: –10℃ ~ 60℃

Operating Humidity: 0–100% relative humidity

Communication distance: up to 130 m (in open space)

Dimensions: 48 × 48 × 21.6 mm