Real-time monitoring : The SNZB-02D sensor will monitor temperature and humidity in real time on the APP remotely or on the display screen, with coverage up to 120 m/400 ft.

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High Accuracy and 5-Second Fast Refresh: Built-in smart hygrometer sensor, giving you more accurate readings, maintaining ±0.2°C/±0.4°F accuracy for temperature and ±2% accuracy for humidity, refreshes readings every 5 seconds.

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Large LCD screen: Use the large LCD screen to clearly and dynamically view real-time temperature and humidity values, and intuitive on-screen icons make it easier than ever to check room conditions and battery status.

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App notifications: You will receive instant alerts from your phone when the temperature or humidity exceeds your set comfort level.
Data storage and export: up to half a year of free cloud storage and accurate enough to view hourly data, you can also check the highest and lowest values at any hour or day, and you can export the data as files.

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OTHER FEATURES

• Zigbee standard compatibility : supports zigbee gateways that use the Zigbee3.0 protocol, compatible with most nodes.
• Add to Home Assistant : Add SONOFF devices to Home Assistant for your home automation via the eWeLink app.
• Work with Alexa and Google Home : Just ask Alexa or Google Home and you'll find out the temperature or humidity.
• Three mounting options : stand, magnetic back, 3M adhesive

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Technical details:

• Power supply: 3V
• Wireless connectivity: Zigbee 3.0
• Works with: Amazon Alexa, Google Assistant, IFTTT
• Certified compliance: CE, FCC
• Operating humidity: 5% - 95% RH non-condensing
• Housing material: PC V0
• Dimensions: 59.5 x 62.5 x 18.5 mm
• Power supply: 3V (CR2450 - included)

Manufacturer's website

User view

The Sonoff SNZB-02D smart temperature and humidity sensor is best used by those who want to always have the ideal climate at home without worry and unnecessary guesswork. It is especially popular with families with small children, pets or plants, as well as the elderly or anyone who wants better control over the air in the room.

With a built-in LCD screen and Zigbee connectivity, it is suitable for use in the living room, bedroom or basement, as well as in offices or weekend homes. Sonoff as a brand is known for its reliability and ease of use, which further enhances the sense of security in the modern home. This way, you can quickly notice changes in the space and take timely action for the well-being of everyone in the house.

Why buy at Enaa

We always carry a diverse selection of smart sensors and accessories, carefully vetted for practicality and ease of use. We strive to offer products from reputable brands that appeal to both beginners and experienced smart home users.

Answers to frequently asked questions

Does the Sonoff SNZB-02D sensor work without a permanent internet connection?

Yes, the sensor works within your Zigbee system even when the internet is temporarily unavailable, as it communicates directly with the router or central unit in the network.

Is this model also suitable for outdoor use?

Sonoff SNZB-02D is designed primarily for indoor use, as it is not resistant to direct moisture and weather. It works best indoors, where it can reliably control the climate.

How often does the battery need to be changed and is it included?

The battery is included and usually only needs to be replaced once a year, depending on frequency of use and data refresh settings.

Which smart devices and apps is the sensor compatible with?

The SNZB-02D works with a variety of Zigbee hubs and is compatible with popular smart home systems such as Sonoff ZBBridge, Home Assistant and more. Please check if your smart home ecosystem supports the Zigbee standard before purchasing.

How can I monitor sensor data in different locations in the house?

You can monitor the data on the LCD screen itself or via connected apps on your smartphone or tablet. Place it where you need to monitor temperature and humidity most.

Description updated: October 2025