Sonoff SNZB-02LD Zigbee Thermometer with Probe – IP65

🌡️ Measure where ordinary sensors can't reach

Do you want to measure the temperature in an aquarium, refrigerator, wine cellar or an enclosed space? Standard temperature sensors quickly fall short. The Sonoff SNZB-02LD solves this with a 1.5-meter long, waterproof probe that allows you to measure precisely where it really matters. Even if the environment is humid, cold or difficult to access.

Key benefits

• >

2.2″ clear LCD display

• – view the temperature directly at a glance, without an app >

1.5 m Stainless Steel probe

• – measure in liquids, tanks, pipes, refrigerators and terrariums >

IP65 waterproof

• – resistant to splash water and humid environments (no submersion) >

Zigbee 3.0

• – stable, energy-efficient connection with a broad ecosystem >

Probe temperature range:

• −40 °C to +115 °C with an accuracy of ±0.5 °C >

Datalogging:

• store up to 6 months of temperature history in the eWeLink app >

Anomaly notifications

• – set up smart scenes for high/low temperature alarms >

Refresh rate:

• current measurement every 5 seconds >

Long battery life

• on one CR2477 coin cell battery

Compatibility & Integration

⚠️ Please note: Tuya Smart is not supported – Sonoff is not licensed for this platform.

Practical example: smart refrigerator monitoring

Thanks to Home Assistant and the SNZB-02LD, you can easily build an automation:
📌 "If the probe temperature rises above +8 °C, send a push notification and switch on a smart plug that resets the refrigerator."
This way, you always have control over your cold chain – whether it's a wine fridge, medical refrigeration, or freezer. Also ideal for aquarium enthusiasts who want to monitor water temperature 24/7.

Technical specifications

Package contents

• >1× Sonoff SNZB-02LD temperature sensor >1× CR2477 battery >1× Sensor hanger >1× Velcro >1× Card pin

❓ Frequently Asked Questions (FAQ)

Can I fully immerse the probe in water?
The probe itself is waterproof and suitable for liquids. The main device is IP65 (splashproof), but must not be submerged.

Does the sensor work without internet?
Yes! The sensor communicates locally via Zigbee. In Home Assistant, everything works completely locally, even without internet.

Do I need a Zigbee hub?
Yes, you need a compatible Zigbee bridge, such as the SONOFF ZBDongle-P, ZBBridge-P or Homey Pro.

Can I calibrate the sensor?
Yes, calibration is available via Zigbee2MQTT and the eWeLink app.

How long is temperature data stored?
Up to 6 months in the eWeLink app, including export option.

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