Sonoff SNZB-02D ZigBee LCD Smart Temperature and Humidity Sensor

Monitor the temperature and humidity in different rooms. The Sonoff sensor provides accurate readings, refreshing every 5 seconds. It also allows remote real-time temperature monitoring and sends notifications in the app when the set temperature value is exceeded. It also stores data in the cloud, so you have convenient access to your measurements.

Various applications

The Sonoff sensor will work well in rooms with an area of no more than 120 meters. The product will find its application in places such as terrariums, wine cellars, music stores, incubators, greenhouses, etc. You will also use it at home, for example, in a child's room.

High accuracy

The device is equipped with a Swiss hygrostat that measures temperature and humidity with an accuracy of ±0.2°C/RH. In addition, the readings are updated every 5 seconds, so you can always be up to date. You can also set the temperature unit to °C or °F.

Convenient management

The sensor is controlled from the app. This makes it easy for you to read notifications when, for example, the temperature is exceeded. What's more, you can add the device to Home Assistant via eWeLink or use it with other smart home devices - when the humidity level drops below 40%, the humidifier will automatically turn on. Sonoff SNZB-02D also supports Amazon Alexa and Google Home, so you can check the temperature or humidity in the room with a simple voice command.

Wide compatibility

You can connect the Sonoff SNZB-02D to various devices. The sensor supports Zigbee gateways using the 3.0 protocol. As a result, it is compatible with the NSPanel Pro wall switch, the Sonoff Zigbee Bridge/Pro smart phone switch, the Sonoff ZBDongle-P/E dongle, and the Amazon Alexa system with a built-in Zigbee hub.

Convenient data access

Interested in saving your saved measurements? With Sonoff SNZB-02D, you can access them conveniently. The eWeLink app allows you to save readings so you can check the measurements of a specific time or selected day at any time and then export them. In addition, the measurement history is available for six months. To access it, you need a Sonoff gateway in addition to the app.

3 mounting methods

The sensor can be mounted in 3 different ways, so you can choose the right one for you. The built-in stand allows you to place the device on a table or counter, so you have quick access to measurements. The magnetic design also allows you to attach the SNZB-02D to a metal surface, such as a refrigerator. It is also possible to mount the sensor on a wall with a 3M sticker.

Warranty: 12 months

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Same summary

The Sonoff SNZB-02D ZigBee LCD Smart Temperature and Humidity Sensor is well suited for users who want reliable climate monitoring in their home, especially as part of a larger smart system. Due to the ZigBee connection and the requirement for a central unit, it is best suited for those who already have or are planning a smart home with central management. For standalone use without a central unit, this model is not the best choice. The product's special feature is the practical LCD display and local measurement, which makes it easy to quickly check data directly in the room.

Recommendation source: Enaa guides and team experiences.

User view

Typical users of this sensor appreciate the precise insight into the temperature and humidity in the rooms and the possibility of integration into a smart home network via ZigBee. It is often used in living rooms, bedrooms or basements, where it allows timely action in case of climate changes—for example, turning on a dehumidifier or ventilation. It is also useful for anyone who wants a simple display of data on the screen, without the need to open an application. Many users choose Sonoff products, as they appreciate their reliability and the possibility of connecting multiple sensors into a common smart home system.

Why buy at Enaa

When you purchase smart sensors at Enaa, you receive professionally selected products and descriptions that make your decision easier, while you can choose from numerous proven models for the various needs of home users.

Answers to frequently asked questions

Does the Sonoff SNZB-02D sensor work independently without a central unit?

For full functionality, the sensor must be connected to a ZigBee hub, otherwise wireless connection to other smart devices or remote control cannot be ensured.

Where is the best place to install this sensor?

It is recommended to install it in indoor areas where you want to regularly monitor temperature and humidity, such as a living room, bedroom or basement. Avoid installing it in very humid or outdoor conditions.

Does it support connection to Google Home or Alexa?

The sensor can be integrated into the wider smart home ecosystem via a ZigBee hub, which allows connection to most widespread platforms, including Google Home or Alexa, if the hub is adapted for this.

Does the LCD display show data even without connecting to the app?

Yes, temperature and humidity data are always displayed directly on the sensor's LCD screen, regardless of the connection status with the app.

Description updated: April 2026