Expert4House – Smart Home Automation
Sonoff AirGuard TH SNZB-02DR2 Smart Zigbee Temperature and Humidity Sensor with Display
€14.90
€19.90
Save €5.00Tax included
Read the 2 reviews
Average rating:
5/5
Number of reviews: 2
- Smart Zigbee temperature and humidity sensor with 3.6″ display: shows real-time temperature and humidity values, plus the 24-hour max/min values directly on-screen.
- Remote monitoring with the eWeLink app: check climate data anywhere via the app, access detailed charts, threshold settings, and alert notifications.
- Low-power Zigbee 3.0 protocol: stable, fast connection via Zigbee 3.0 with reduced power consumption and enhanced reliability. Requires a compatible Zigbee hub (SONOFF Zigbee Hub).
- High accuracy and comfortable data readability: quality sensor with precise readings and fast updates for an accurate understanding of your home climate.
- Support for displaying remote sensor data: in Zigbee mode it can show readings from other sensors on the same network without opening the app.
- Integration with smart home ecosystems: compatible with Alexa, Google Home, and Apple Home (via compatible hub) for smart automations based on temperature and humidity.
- Battery-powered with long life: runs on an LR03 battery, designed for extended use thanks to low-power Zigbee technology.
- Simple, flexible installation: can be placed on flat surfaces or wall-mounted; compact, sleek design suits any environment.
Secure payments: cards, PayPal, bank transfer, and installments
Delivery within 48 hours: Free shipping on orders over €150 across Europe
Easy 14-day returns: follow the steps to get your refund
SONOFF AirGuard TH - Zigbee Temperature & Humidity Sensor with 3.6" LCD Display
New SONOFF AirGuard TH SNZB-02DR2 , the Zigbee temperature and humidity sensor with a 3.6” LCD display designed for those who want reliable, immediately readable data and perfect for creating smart automations. Thanks to the large and clear screen, you can see temperature and humidity at a glance even from a comfortable distance: ideal for the home, office, bedroom, kitchen, cellar, laboratory, greenhouse or pantry . The heart of the device is a quality sensor ( Sensirion SHT40 series) that offers precise and stable measurements ( ±0.2°C and ±2 %RH ) over a wide detection window ( -20~60°C / 0~100 %RH ). In practice: it helps you really understand what is happening in the environment, identifying changes, humid areas and conditions that favor mold, condensation and excessively dry air . With the app (via compatible Zigbee hub ) you are not limited to reading the values: you can consult graphs and data history , Compare trends over time and get a more “intelligent” overview thanks to features such as comfort indicators , max/min/average curves and advanced analysis, which are also useful for those who carefully manage ventilation and humidity. The sensor also supports insights such as Dew Point and VPD , useful for preventing condensation and optimizing dehumidification/humidification and air exchange. The real advantage, however, is automation: set thresholds and scenarios to start the dehumidifier, humidifier, fans, heating or air conditioning when really needed. This way you improve well-being, protect furniture and walls and reduce waste. Furthermore, the Zigbee connection is ideal for a responsive and stable smart home (with good coverage), while the Bluetooth mode allows “proximity” readings even without complicated steps. Powered by AAA batteries and designed for indoor use, the SNZB-02DR2 is the perfect sensor for those looking for a complete Zigbee smart hygrometer/thermometer : large display, reliable data, history and automations—all in a single compact and easy-to-use device. clean to look at in every environment.
Reliable performance: more precision, more control over comfort
The SONOFF SNZB-02DR2 (AirGuard TH) is designed for stable and accurate temperature and humidity measurements, so you always know what's going on. Thanks to the Sensirion SHT40 sensor, it offers high accuracy ( ±0.2°C and ±2 %RH ), with a wide detection range of -20~60°C and 0~100 %RH .
The large 3.6" LCD display makes the values readable at a glance , with the possibility of viewing °C/°F and consulting the maximum and minimum values of the last 24 hours . In addition, the Zigbee connection ensures a stable signal and extended coverage (up to 120 m in open fields) with customizable reports to integrate the sensor into your smart automations.
Easy-to-read 3.6" LCD screen, always under control
Smart monitoring, at home and wherever you are
Check temperature and humidity directly from the display when you're at home and monitor everything remotely via the eWeLink app when you're away. You can check environmental changes in real time, receive up-to-date data, and ensure every room remains at ideal conditions, even during critical activities like cooking or using appliances. Convenient, continuous control, wherever you are.
Accurate recording and advanced analytics
Monitor temperature and humidity in greater detail with real-time graphs and advanced history in the app. View minute-by-minute (24-hour) trends, check Max/Min/Average curves for up to 6 months , and even have useful indicators like Comfort Level to immediately understand if the environment is ideal. Plus, Dew Point and VPD analyses help prevent mold, condensation, and excessive humidity , making the sensor perfect for homes, basements, greenhouses, children's rooms, offices, and sensitive environments.
Connect multiple Zigbee sensors and create real-world scenarios
AirGuard TH can also function as a remote temperature/humidity display for other compatible Zigbee sensors: so you can monitor multiple rooms directly from its screen, without opening the app each time. To use the “remote” reading, the sensor must be connected to the same SONOFF Zigbee gateway (e.g. Bridge-P, Bridge-U, NSPanel Pro, iHost) and supported sensors include SNZB-02P , SNZB-02D , SNZB-02WD , SNZB-02LD (AirGuard TH requires firmware v1.1.0 or higher ). Ideal for monitoring cellars, greenhouses, swimming pools or pantries at a glance and triggering targeted automations based on the detected values.
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Smart Whole-Home Environmental Control
Transform your home into a constantly balanced environment thanks to smart temperature and humidity monitoring. The SONOFF AirGuard TH sensor activates smart automations and sends instant alerts to your smartphone when values exceed preset thresholds, allowing you to take immediate action. Ideal for coordinating air conditioning, dehumidifiers, and ventilation, it ensures constant comfort, mold prevention , and efficient room management, effortlessly and from anywhere.
Proximity Mode: Instant monitoring without a gateway
Voice control with Alexa, Google Home, and SmartThings
Check temperature and humidity simply with your voice, without opening the app. AirGuard TH integrates with leading voice assistants to provide you with instant, hands-free environmental information, perfect for everyday life and smart home management.
Compatible with Apple Home thanks to Matter Bridge
Integrate SONOFF Zigbee sensors, including AirGuard TH , into the Apple Home ecosystem via Matter Bridge for reliable, unified control. Manage temperature and humidity directly from your iPhone, iPad, Mac, or Apple Watch, creating advanced automations and seamless smart scenarios, even in environments with multiple devices and gateways.
Advanced open-source integration with Home Assistant and MQTT
AirGuard TH easily integrates with leading open-source platforms, such as Home Assistant , offering maximum control and flexibility to the most advanced users. Thanks to compatibility with SONOFF Zigbee Dongle and MQTT support, you can view real-time temperature and humidity, create custom dashboards, complex automations, and detailed logs directly in your home automation system.
*Currently, using AirGuard TH with ZHA requires a script. For detailed instructions, please see: https://help.sonoff.tech/docs/SNZB02DR2
Compatibility with Zigbee Hub
Note: Please update your gateway to the latest firmware before adding the device.
AirGuard Series Comparison
4 Steps to Use
Simple setup: download the app, scan the QR code to connect to the Zigbee hub and add the device.
Frequently Asked Questions
The smallest measurable change that causes the value displayed on the AirGuard TH to update. Simply put, it refers to how many decimal places the data on the screen is precise.
Regarding the AirGuard TH:
Temperature: 0.1°C / 0.1°F
Humidity: 1% RH on display; 0.1% RH on app
Accuracy refers to the maximum deviation between the measured value and the actual value.
Regarding AirGuard TH: Temperature: ±0.2℃（-20~60℃） Humidity: ±2 %UR （0~100 %UR ）
Reportable temperature variation: default ±0.2℃, range ±0.2~±1℃.
Reportable humidity variation: default ±1 %UR , range ±1 %UR ~±5 %UR .
If there is a change in the value, the default reporting interval is 5s, and the adjustable interval is from 5s to 1h.
Yes. For example, with Home Assistant, you can pair the device using Dongle Series, add it via ZHA, or Zigbee2MQTT (Z2M). Please note that a script is currently required to add it to ZHA; please see the instructions and script on the SONOFF Help Center .
Yes. The sensor uses the Zigbee 3.0 protocol and requires a compatible Zigbee hub, such as: SONOFF Zigbee Bridge / Zigbee Bridge Pro, SONOFF iHost Zigbee compatible hubs (e.g. Home Assistant with Zigbee dongle)
Compatible with: eWeLink App, Home Assistant (via Zigbee). Enables automations, notifications, and data history.
Standard deliveries to Italy generally take 24-48 hours from the time the package leaves the warehouse.
Orders confirmed by 3:30 PM on weekdays (Monday-Friday) are processed and shipped the same day.
Orders placed after 3:30 PM or on weekends or public holidays will be processed on the next working day.
Yes, we ship internationally to the European Union and several non-EU countries via couriers such as UPS Standard and DHL Express.
For the EU, with UPS Standard the average times are 2-3 working days .
With DHL Express, usually 1-2 business days .
Sonoff-SNZB-02DR2
Data sheet
- Power supply
- LR03 1.5V battery
- Material
- ABS+PC
- Working temperature
- -20℃-60℃
- Working humidity
- 5% - 95% non-condensing
- Voice Control
- Amazon Alexa, Google Home and Siri
- Mobile application
- eWeLink
- Item weight
- 99.3 g
- Communication Protocol
- Zigbee 3.0
- Screen size
- 3.6 Inches
- mcu
- TLSR8656F512ET32
- Zigbee protocol
- IEEE 802.15.4 (Zigbee 3.0)
- Features
- Humidity Measurement
Temperature Measurement - Works with
- Amazon Alexa
Apple Home (HomeKit)
Google Home
Home Assistant
SmartThings
eWeLink (Sonoff) - Hub required
- Sonoff Zigbee hub (ZBBridge / iHost / NSPanel Pro)
- Ideal for
- Sensors & detection
- Home Assistant integration
- Cloud integration
Zigbee via dongle (ZHA / Zigbee2MQTT)
Specific References
- UPC
- 692007574359
- EAN13
- 6920075743593
- MPN
- Sonoff SNZB-02DR2
Ottimo
07/28/2026
gaetano d.
Ottimo
Buono
07/28/2026
Angelo P.
Sensore di temperatura e umidità ottimo
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- Smart Zigbee temperature and humidity sensor with 3.6″ display: shows real-time temperature and humidity values, plus the 24-hour max/min values directly on-screen.
- Remote monitoring with the eWeLink app: check climate data anywhere via the app, access detailed charts, threshold settings, and alert notifications.
- Low-power Zigbee 3.0 protocol: stable, fast connection via Zigbee 3.0 with reduced power consumption and enhanced reliability. Requires a compatible Zigbee hub (SONOFF Zigbee Hub).
- High accuracy and comfortable data readability: quality sensor with precise readings and fast updates for an accurate understanding of your home climate.
- Support for displaying remote sensor data: in Zigbee mode it can show readings from other sensors on the same network without opening the app.
- Integration with smart home ecosystems: compatible with Alexa, Google Home, and Apple Home (via compatible hub) for smart automations based on temperature and humidity.
- Battery-powered with long life: runs on an LR03 battery, designed for extended use thanks to low-power Zigbee technology.
- Simple, flexible installation: can be placed on flat surfaces or wall-mounted; compact, sleek design suits any environment.
Sonoff AirGuard TH SNZB-02DR2 Smart Zigbee Temperature and Humidity Sensor with Display
€14.90
€19.90
Save €5.00Tax included
Read the 2 reviews
Average rating:
5/5
Number of reviews: 2