SONOFF SNZB-02LD IP65 Zigbee LCD Smart Thermometer (Probe Version)

Sonoff Zigbee LCD Smart Thermometer – Probe Sensor Version (SNZB-02LD)

The SNZB-02LD is a Zigbee-compatible smart thermometer with an LCD display and IP65 protection, making it a reliable choice even in humid or splash-prone environments. Its probe is made of food-grade 304 stainless steel, resistant to both high and low temperatures. The 2.2-inch LCD screen clearly displays the current temperature in °C or °F. Thanks to its UV-resistant design, it can withstand prolonged exposure to direct sunlight. The 1.5-meter external probe allows temperature monitoring in enclosed spaces or liquids – even in places where conventional sensors cannot reach.

The SNZB-02LD is compatible with Zigbee 3.0 hubs such as SONOFF iHost, NSPanel Pro, ZBBridge-P, ZBBridge-U, ZBDongle-E, ZBDongle-P, as well as Echo 4th Gen, Echo Show 2nd Gen, and Echo Plus 2nd Gen. It also integrates with open-source platforms like Home Assistant using the SONOFF ZBDongle series – allowing you to build a fully customized temperature monitoring system.

In the eWeLink app, you can review temperature data by day, month, or half-year intervals, with up to 180 days of data storage. Graphs can be shared or exported as needed. You can also set up smart scenes, receive alerts for abnormal temperatures, or automate other devices based on sensor readings.

Whether it’s for food safety, pet care, wine storage, or greenhouse climate control, the SNZB-02LD delivers accurate and smart temperature monitoring for any situation.

Key Features

• Large, easy-to-read LCD display: Shows real-time temperature
• External sensor probe: Ensures more accurate readings, especially in low-ventilation areas.
• Zigbee 3.0 protocol: Stable, reliable connection with integration into any smart home system.
• Real-time notifications: Instant alerts when temperature or humidity goes out of range.
• Data history and graphs: Review past measurements and trends on your smartphone.
• Wide measurement range:
  • Temperature: -40°C to +115°C (with probe)
  • Humidity: 0% to 99% RH

Integration and Compatibility

This device is fully compatible with the Sonoff Zigbee gateway and other Zigbee 3.0 hubs, such as:

• Amazon Alexa (Echo Hub devices)
• Samsung SmartThings
• Home Assistant (ZHA, Zigbee2MQTT)
• Tuya Zigbee hubs

It works with any smart home system that supports Zigbee 3.0, making it easy to integrate into automation rules – for example, to control heating or dehumidifiers based on temperature readings.

When used with a Sonoff Zigbee Bridge, the device sends data to the eWeLink cloud, enabling control of other Sonoff or SmartWise Wi-Fi and eWeLink-compatible devices based on the measured values.

Equipped with a Swiss hygrometer sensor, the SNZB-02LD offers even more precise readings than its predecessor. It measures temperature with an accuracy of ±0.2°C (±0.4°F) and humidity with ±2% RH, with data refreshed every 5 seconds via its combined sensor.

Technical Specifications

• Model: SNZB-02LD
• Communication protocol: Zigbee 3.0
• Zigbee compatibility: Works with SONOFF ZBBridge-P/U, NSPanel Pro, iHost, ZBDongle-E/P, Amazon Echo (4th Gen, Echo Plus 2nd Gen, Echo Show 2nd Gen)
• Display: 2.2" LCD
• Units: °C / °F (selectable)
• Power supply: CR2477 battery (up to 2 years of battery life)
• Temperature measurement range: With probe: -40°C to +115°C 
• Humidity measurement range: 0% – 99% RH
• Measurement accuracy:
  • Temperature: ±0.2°C
  • Humidity: ±2% RH
• Probe length: 1.5 meters
• Probe material: 304 stainless steel (food-grade)
• IP rating: IP65 (splash and dust resistant)
• UV resistance: Yes, suitable for outdoor use
• Storage capacity: Up to 180 days of temperature data in the eWeLink app
• Mobile app: eWeLink (iOS / Android)
• Supported features:
  • Real-time temperature and humidity display
  • Alerts for abnormal values
  • Custom automation rules